diff --git a/client/src/api/purchaseRequests.ts b/client/src/api/purchaseRequests.ts
index 1cb85901..9620b201 100644
--- a/client/src/api/purchaseRequests.ts
+++ b/client/src/api/purchaseRequests.ts
@@ -111,6 +111,78 @@ export type PurchaseOrderArchive = {
   archivedFiles: PurchaseArchivedFile[];
 };
 
+export type PurchaseErpTrackStatus =
+  | "not_triggered"
+  | "pending"
+  | "processing"
+  | "succeeded"
+  | "failed"
+  | "dead_letter"
+  | "skipped";
+
+export type PurchaseErpBinding = {
+  id: string;
+  provider: string;
+  entityType: string;
+  localId: string;
+  externalId: string | null;
+  externalCode: string | null;
+  lastSyncedAt: string | null;
+};
+
+export type PurchaseErpOutbox = {
+  id: string;
+  eventType: string;
+  status: string;
+  attempts: number;
+  lastError: string | null;
+  processedAt: string | null;
+  updatedAt: string | null;
+};
+
+export type PurchaseErpTrackStage = {
+  eligible: boolean;
+  reason: string | null;
+  status: PurchaseErpTrackStatus | string;
+  preview: Record<string, unknown>;
+  outbox: PurchaseErpOutbox | null;
+  binding?: PurchaseErpBinding | null;
+  bindings?: {
+    po: PurchaseErpBinding | null;
+    contract: PurchaseErpBinding | null;
+  };
+};
+
+export type PurchaseRequestErpTrack = {
+  purchaseRequest: {
+    id: string;
+    requestNo: string | null;
+    status: string;
+    totalAmount: string;
+    supplier: {
+      id: string;
+      code: string | null;
+      name: string | null;
+    } | null;
+    archiveOrder: {
+      id: string;
+      poNo: string;
+      contractNo: string | null;
+      archivedAt: string | null;
+    } | null;
+  };
+  stages: {
+    commitmentJournal: PurchaseErpTrackStage;
+    accrualJournal: PurchaseErpTrackStage;
+    archiveSummary: PurchaseErpTrackStage;
+  };
+  permissions: {
+    canRetry: boolean;
+  };
+};
+
+export type PurchaseRequestErpRequeueTarget = "commitment_journal" | "accrual_journal" | "archive_summary";
+
 export type PurchaseRequestDetail = PurchaseRequestSummary & {
   items: PurchaseRequestItem[];
   attachments: PurchaseAttachment[];
@@ -290,3 +362,34 @@ export async function issuePurchaseAttachmentSignedUrl(purchaseRequestId: string
     },
   );
 }
+
+export async function fetchPurchaseRequestErpTrack(purchaseRequestId: string) {
+  return apiRequestData<PurchaseRequestErpTrack>(
+    `/api/integrations/erp/procurement/purchase-requests/${purchaseRequestId}/track`,
+  );
+}
+
+export async function requeuePurchaseRequestErpSync(
+  purchaseRequestId: string,
+  payload: {
+    targets: PurchaseRequestErpRequeueTarget[];
+  },
+  runNow = true,
+) {
+  return apiRequestData<{
+    items: Array<{
+      target: PurchaseRequestErpRequeueTarget;
+      outboxId: string;
+      status: string;
+      duplicated: boolean;
+      requeued: boolean;
+      eventType: string;
+    }>;
+  }>(
+    `/api/integrations/erp/procurement/purchase-requests/${purchaseRequestId}/requeue${toQueryString({ runNow })}`,
+    {
+      method: 'POST',
+      body: JSON.stringify(payload),
+    },
+  );
+}
diff --git a/client/src/components/common/StatusBadge.tsx b/client/src/components/common/StatusBadge.tsx
index ba8ff1ea..53e07cb3 100644
--- a/client/src/components/common/StatusBadge.tsx
+++ b/client/src/components/common/StatusBadge.tsx
@@ -5,7 +5,12 @@ import { cn } from "../../lib/utils";
 const STATUS_MAP: Record<string, { label: string; className: string }> = {
   draft: { label: "草稿", className: "badge-neutral bg-zinc-200/50" },
   reviewing: { label: "审批中", className: "badge-warning" },
-  pending: { label: "处理中", className: "badge-warning" },
+  pending: { label: "待派发", className: "badge-warning" },
+  processing: { label: "处理中", className: "badge-warning" },
+  succeeded: { label: "已成功", className: "badge-success" },
+  failed: { label: "失败", className: "badge-error" },
+  dead_letter: { label: "死信", className: "badge-error" },
+  not_triggered: { label: "未触发", className: "badge-neutral" },
   pending_ocr: { label: "识别中", className: "badge-warning" },
   approved: { label: "已通过", className: "badge-success" },
   completed: { label: "已完成", className: "badge-success" },
diff --git a/client/src/pages/PurchaseRequestsPage.tsx b/client/src/pages/PurchaseRequestsPage.tsx
index a3cbcd86..c5f6ebd1 100644
--- a/client/src/pages/PurchaseRequestsPage.tsx
+++ b/client/src/pages/PurchaseRequestsPage.tsx
@@ -9,12 +9,17 @@ import {
   deletePurchaseAttachment,
   fetchPurchaseOrderArchive,
   fetchPurchaseRequestDetail,
+  fetchPurchaseRequestErpTrack,
   fetchPurchaseRequests,
   issuePurchaseAttachmentSignedUrl,
+  requeuePurchaseRequestErpSync,
   submitPurchaseRequest,
   updatePurchaseRequest,
   uploadPurchaseAttachment,
   withdrawPurchaseRequest,
+  type PurchaseErpBinding,
+  type PurchaseRequestErpRequeueTarget,
+  type PurchaseRequestErpTrack,
   type PurchaseRequestItemPayload,
   type PurchaseRequestStatus,
 } from "../api/purchaseRequests";
@@ -87,12 +92,113 @@ function statusOptions(): Array<{ value: PurchaseRequestStatus | ""; label: stri
   ];
 }
 
+type PurchaseErpStageKey = keyof PurchaseRequestErpTrack["stages"];
+
+const PURCHASE_ERP_STAGE_META: Record<
+  PurchaseErpStageKey,
+  { title: string; target: PurchaseRequestErpRequeueTarget }
+> = {
+  commitmentJournal: { title: "Commitment", target: "commitment_journal" },
+  accrualJournal: { title: "Accrual", target: "accrual_journal" },
+  archiveSummary: { title: "PO/合同同步", target: "archive_summary" },
+};
+
+function formatStageReason(reason: string | null) {
+  switch (reason) {
+    case "purchase_request_not_approved":
+      return "当前采购单尚未处于已通过状态";
+    case "purchase_order_archive_missing":
+      return "尚未完成 PO/合同归档";
+    default:
+      return reason ?? null;
+  }
+}
+
+function resolveStageTimestamp(stage: PurchaseRequestErpTrack["stages"][PurchaseErpStageKey]) {
+  const binding = stage.binding as PurchaseErpBinding | null | undefined;
+  const poBinding = stage.bindings?.po ?? null;
+  const contractBinding = stage.bindings?.contract ?? null;
+
+  return (
+    stage.outbox?.updatedAt ??
+    stage.outbox?.processedAt ??
+    binding?.lastSyncedAt ??
+    poBinding?.lastSyncedAt ??
+    contractBinding?.lastSyncedAt ??
+    null
+  );
+}
+
+function resolveStageExternalCode(stage: PurchaseRequestErpTrack["stages"][PurchaseErpStageKey]) {
+  const binding = stage.binding as PurchaseErpBinding | null | undefined;
+  return binding?.externalCode ?? stage.bindings?.po?.externalCode ?? stage.bindings?.contract?.externalCode ?? null;
+}
+
+function resolveStageExternalId(stage: PurchaseRequestErpTrack["stages"][PurchaseErpStageKey]) {
+  const binding = stage.binding as PurchaseErpBinding | null | undefined;
+  return binding?.externalId ?? stage.bindings?.po?.externalId ?? stage.bindings?.contract?.externalId ?? null;
+}
+
+function resolveStageSummary(stageKey: PurchaseErpStageKey, stage: PurchaseRequestErpTrack["stages"][PurchaseErpStageKey]) {
+  const preview = stage.preview as {
+    documentNo?: string | null;
+    requestNo?: string | null;
+    poNo?: string | null;
+    contractNo?: string | null;
+    totalAmount?: string | null;
+    supplier?: {
+      code?: string | null;
+    };
+    dimensions?: {
+      legalEntityCode?: string | null;
+      costCenterCode?: string | null;
+      supplierCode?: string | null;
+    };
+  };
+
+  return {
+    documentNo:
+      preview.documentNo ??
+      preview.requestNo ??
+      (stageKey === "archiveSummary" ? preview.poNo ?? null : null),
+    totalAmount: preview.totalAmount ?? null,
+    legalEntityCode: preview.dimensions?.legalEntityCode ?? null,
+    costCenterCode: preview.dimensions?.costCenterCode ?? null,
+    supplierCode: preview.dimensions?.supplierCode ?? preview.supplier?.code ?? null,
+    poNo: preview.poNo ?? null,
+    contractNo: preview.contractNo ?? null,
+  };
+}
+
+function resolveStageAction(stageKey: PurchaseErpStageKey, stage: PurchaseRequestErpTrack["stages"][PurchaseErpStageKey]) {
+  if (!stage.eligible) {
+    return null;
+  }
+
+  if (stage.status === "failed" || stage.status === "dead_letter") {
+    return {
+      label: stageKey === "archiveSummary" ? "重试同步摘要" : "重试同步",
+      target: PURCHASE_ERP_STAGE_META[stageKey].target,
+    };
+  }
+
+  if (stage.status === "not_triggered" || stage.status === "skipped") {
+    return {
+      label: stageKey === "archiveSummary" ? "补发摘要" : "补发",
+      target: PURCHASE_ERP_STAGE_META[stageKey].target,
+    };
+  }
+
+  return null;
+}
+
 export function PurchaseRequestsPage() {
   const queryClient = useQueryClient();
   const { permissions } = useAuth();
 
   const canCreate = hasPermission(permissions, "procurement.create");
   const canManage = hasPermission(permissions, "procurement.manage");
+  const canIntegrationManage = hasPermission(permissions, "integration.manage");
   const canViewAll =
     hasPermission(permissions, "procurement.view_all") ||
     canManage;
@@ -164,6 +270,14 @@ export function PurchaseRequestsPage() {
     queryFn: () => fetchPurchaseOrderArchive(selectedId),
   });
 
+  const erpTrackQuery = useQuery({
+    enabled:
+      Boolean(selectedId) &&
+      (detailQuery.data?.status === "approved" || Boolean(detailQuery.data?.archiveOrder)),
+    queryKey: ["purchase-requests", "erp-track", selectedId],
+    queryFn: () => fetchPurchaseRequestErpTrack(selectedId),
+  });
+
   useEffect(() => {
     if (selectedId) {
       if (detailQuery.isLoading) {
@@ -337,6 +451,7 @@ export function PurchaseRequestsPage() {
       await Promise.all([
         queryClient.invalidateQueries({ queryKey: ["purchase-requests"] }),
         queryClient.invalidateQueries({ queryKey: ["workflow", "tasks"] }),
+        queryClient.invalidateQueries({ queryKey: ["purchase-requests", "erp-track", selectedId] }),
       ]);
       setFormError("");
       toast.success(
@@ -364,6 +479,7 @@ export function PurchaseRequestsPage() {
         queryClient.invalidateQueries({ queryKey: ["purchase-requests"] }),
         queryClient.invalidateQueries({ queryKey: ["workflow", "tasks"] }),
         queryClient.invalidateQueries({ queryKey: ["purchase-requests", "archive-order", selectedId] }),
+        queryClient.invalidateQueries({ queryKey: ["purchase-requests", "erp-track", selectedId] }),
       ]);
       setFormError("");
       toast.success("采购申请已撤回到草稿");
@@ -394,6 +510,7 @@ export function PurchaseRequestsPage() {
       await Promise.all([
         queryClient.invalidateQueries({ queryKey: ["purchase-requests", "detail", selectedId] }),
         queryClient.invalidateQueries({ queryKey: ["purchase-requests", "archive-order", selectedId] }),
+        queryClient.invalidateQueries({ queryKey: ["purchase-requests", "erp-track", selectedId] }),
       ]);
       toast.success("PO/合同归档已保存");
     },
@@ -403,6 +520,39 @@ export function PurchaseRequestsPage() {
     },
   });
 
+  const requeueErpMutation = useMutation({
+    mutationFn: async (payload: { target: PurchaseRequestErpRequeueTarget; label: string }) => {
+      if (!selectedId) {
+        throw new Error("请先选择采购单");
+      }
+      return {
+        label: payload.label,
+        response: await requeuePurchaseRequestErpSync(selectedId, { targets: [payload.target] }),
+      };
+    },
+    onSuccess: async ({ label, response }) => {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: ["purchase-requests", "detail", selectedId] }),
+        queryClient.invalidateQueries({ queryKey: ["purchase-requests", "archive-order", selectedId] }),
+        queryClient.invalidateQueries({ queryKey: ["purchase-requests", "erp-track", selectedId] }),
+      ]);
+      const firstItem = response.items[0];
+      if (firstItem?.duplicated) {
+        toast.success(`${label} 已存在待处理记录`);
+        return;
+      }
+      if (firstItem?.requeued) {
+        toast.success(`${label} 已重新入队`);
+        return;
+      }
+      toast.success(`${label} 已加入同步队列`);
+    },
+    onError: (error) => {
+      const message = resolveError(error);
+      toast.error(message);
+    },
+  });
+
   const uploadMutation = useMutation({
     mutationFn: async (file: File) => {
       if (!selectedId) {
@@ -455,6 +605,8 @@ export function PurchaseRequestsPage() {
 
   const detail = detailQuery.data;
   const archiveOrder = archiveOrderQuery.data?.archiveOrder ?? detail?.archiveOrder ?? null;
+  const erpTrack = erpTrackQuery.data ?? null;
+  const canRetryErp = Boolean(canIntegrationManage && erpTrack?.permissions.canRetry);
   const showArchiveSection = Boolean(detail && (detail.status === "approved" || archiveOrder));
   const canEditDraft = Boolean(detail?.permissions.canEditDraft);
   const canSubmit = Boolean(detail?.permissions.canSubmit);
@@ -1027,6 +1179,93 @@ export function PurchaseRequestsPage() {
                   ) : null}
                 </div>
               ) : null}
+
+              {showArchiveSection ? (
+                <div className="space-y-3 rounded-lg border border-zinc-200 p-4">
+                  <div className="flex items-center justify-between">
+                    <div>
+                      <h4 className="text-base font-semibold text-zinc-900">采购 ERP 同步轨道</h4>
+                      <p className="text-sm text-zinc-500">展示 Commitment / Accrual / PO/合同摘要三段 ERP 同步状态，失败后可在此重试。</p>
+                    </div>
+                  </div>
+
+                  {erpTrackQuery.isLoading ? (
+                    <p className="rounded-lg bg-zinc-50 px-3 py-2 text-sm text-zinc-500">ERP 轨道加载中...</p>
+                  ) : erpTrackQuery.isError ? (
+                    <p className="rounded-lg border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-600">{resolveError(erpTrackQuery.error)}</p>
+                  ) : erpTrack ? (
+                    <div className="grid gap-3 xl:grid-cols-3">
+                      {(Object.entries(PURCHASE_ERP_STAGE_META) as Array<
+                        [PurchaseErpStageKey, (typeof PURCHASE_ERP_STAGE_META)[PurchaseErpStageKey]]
+                      >).map(([stageKey, meta]) => {
+                        const stage = erpTrack.stages[stageKey];
+                        const summary = resolveStageSummary(stageKey, stage);
+                        const action = canRetryErp ? resolveStageAction(stageKey, stage) : null;
+                        const stageTime = resolveStageTimestamp(stage);
+                        const externalCode = resolveStageExternalCode(stage);
+                        const externalId = resolveStageExternalId(stage);
+                        const reasonText = formatStageReason(stage.reason);
+                        const isSubmittingAction = requeueErpMutation.isPending && requeueErpMutation.variables?.target === action?.target;
+
+                        return (
+                          <div key={stageKey} className="space-y-3 rounded-lg border border-zinc-200 p-3">
+                            <div className="flex items-center justify-between gap-3">
+                              <div>
+                                <div className="text-sm font-semibold text-zinc-900">{meta.title}</div>
+                                <div className="text-xs text-zinc-500">
+                                  {stageTime ? `最近更新时间：${new Date(stageTime).toLocaleString()}` : "尚无同步记录"}
+                                </div>
+                              </div>
+                              <StatusBadge status={stage.status} />
+                            </div>
+
+                            <div className="space-y-1 text-xs text-zinc-600">
+                              <div>单号：{summary.documentNo ?? "-"}</div>
+                              <div>金额：{summary.totalAmount ?? "-"}</div>
+                              <div>法体 / 成本中心：{summary.legalEntityCode ?? "-"} / {summary.costCenterCode ?? "-"}</div>
+                              <div>供应商：{summary.supplierCode ?? "-"}</div>
+                              {stageKey !== "commitmentJournal" ? (
+                                <div>PO / 合同：{summary.poNo ?? "-"} / {summary.contractNo ?? "-"}</div>
+                              ) : null}
+                            </div>
+
+                            {reasonText ? (
+                              <div className="rounded bg-zinc-50 px-2 py-1 text-xs text-zinc-500">{reasonText}</div>
+                            ) : null}
+
+                            {stage.outbox?.lastError ? (
+                              <div className="rounded bg-red-50 px-2 py-1 text-xs text-red-600">{stage.outbox.lastError}</div>
+                            ) : null}
+
+                            {canIntegrationManage && (externalCode || externalId) ? (
+                              <div className="rounded bg-zinc-50 px-2 py-1 text-xs text-zinc-600">
+                                ERP 编号：{externalCode ?? "-"}
+                                {externalId ? ` · ${externalId}` : ""}
+                              </div>
+                            ) : null}
+
+                            {action ? (
+                              <div className="flex justify-end">
+                                <Button
+                                  type="button"
+                                  size="sm"
+                                  variant="secondary"
+                                  disabled={requeueErpMutation.isPending}
+                                  onClick={() => requeueErpMutation.mutate({ target: action.target, label: meta.title })}
+                                >
+                                  {isSubmittingAction ? "处理中..." : action.label}
+                                </Button>
+                              </div>
+                            ) : null}
+                          </div>
+                        );
+                      })}
+                    </div>
+                  ) : (
+                    <p className="rounded-lg bg-zinc-50 px-3 py-2 text-sm text-zinc-500">暂无 ERP 轨道信息</p>
+                  )}
+                </div>
+              ) : null}
             </>
           ) : null}
         </div>
diff --git a/docs/domain-events.md b/docs/domain-events.md
index 3b97a21d..f7a30591 100644
--- a/docs/domain-events.md
+++ b/docs/domain-events.md
@@ -1,7 +1,7 @@
-# 领域事件清单（P19 / P19+IM-1 / P19+ERP-1）
+# 领域事件清单（P19 / P19+IM-1 / P19+ERP-2）
 
 **快照日期**：2026-03-08  
-**目标**：冻结 `hyb-oa` 当前采购与资产域的标准领域事件名，并补充 `P19+IM-1` 已实际消费的 IM 通知类型清单，以及 `P19+ERP-1` 已实际落地的 ERP 消费映射，作为后续 ERP / IM / AI 适配的事实源。
+**目标**：冻结 `hyb-oa` 当前采购与资产域的标准领域事件名，并补充 `P19+IM-1` 已实际消费的 IM 通知类型清单，以及 `P19+ERP-1 / ERP-2` 已实际落地的 ERP 消费映射，作为后续 ERP / IM / AI 适配的事实源。
 
 ## 1. 使用原则
 - 本文档同时维护两类事实：
@@ -18,6 +18,7 @@
 | `purchase_request.approved` | 采购申请审批通过后 | `purchase_request` | `purchaseRequestId`, `requestNo`, `approvedBy`, `legalEntityId`, `costCenterId`, `supplierId`, `budgetPoolId`, `totalAmount`, `status` | ERP、IM、AI | 对应预算 `confirm` 已完成 |
 | `purchase_request.rejected` | 采购申请审批驳回后 | `purchase_request` | `purchaseRequestId`, `requestNo`, `actorId`, `reason`, `status` | IM、AI | 若存在预算预留，应已释放 |
 | `purchase_request.withdrawn` | 申请人撤回采购申请后 | `purchase_request` | `purchaseRequestId`, `requestNo`, `actorId`, `status` | IM、AI、ERP 补偿 | 表示由 `reviewing` 回到 `draft` |
+| `purchase_order.archived` | PO/合同归档保存成功后 | `purchase_order_archive` | `purchaseOrderArchiveId`, `purchaseRequestId`, `requestNo`, `poNo`, `contractNo`, `archivedAt`, `totalAmount` | ERP、AI | ERP-2 以此驱动 accrual journal 与 archive summary |
 | `asset.card.created` | 资产卡片创建成功后 | `asset_card` | `assetId`, `assetNo`, `name`, `categoryId`, `legalEntityId`, `costCenterId`, `purchaseRequestId`, `status` | ERP、IM、AI | 资产域不接 workflow |
 | `asset.assigned` | 资产领用成功后 | `asset_card` | `assetId`, `assetNo`, `employeeId`, `assignedAt`, `location`, `status` | IM、AI | 对应新增 open assignment |
 | `asset.returned` | 资产归还成功后 | `asset_card` | `assetId`, `assetNo`, `employeeId`, `returnedAt`, `location`, `status` | IM、AI | 对应关闭 open assignment |
@@ -29,6 +30,7 @@
 | entityType | 推荐事件前缀 | 当前事实源 |
 | --- | --- | --- |
 | `purchase_request` | `purchase_request.*` | `P17A` / `P17B` |
+| `purchase_order_archive` | `purchase_order.*` | `P17B` / `P19+ERP-2` |
 | `asset_card` | `asset.*` | `P18A` / `P18B` |
 | `inventory_check` | `inventory_check.*` | `P18B` |
 
@@ -55,13 +57,13 @@
 - 载荷字段命名应与 HTTP camelCase 输出保持一致，不直接暴露数据库 snake_case 列名。
 
 ## 6. 明确不纳入当前事件主表的事项
-- `purchase_request.archived`：待未来采购归档通知专项再冻结
+- `purchase_order.cancelled`：待未来采购撤销 / 作废专项再冻结
 - `inventory_check.started`：当前不是对外关键事实源
 - `asset.repaired` / `asset.retired`：待未来维修 / 报废专项后再定义
 
 ## 7. 推荐消费场景
 - IM：采购审批结果、报销结果、资产领用归还、盘点完成提醒
-- ERP：采购审批通过摘要、资产卡片新增摘要、盘点完成摘要
+- ERP：采购审批 commitment、PO/合同归档 accrual / summary、资产卡片新增摘要、盘点完成摘要
 - AI：审批摘要、异常提示、主数据重复建议、盘点结果总结
 
 ## 8. P19+IM-1 已消费通知类型
@@ -91,9 +93,12 @@
 
 这些事件名称仍保留在长期蓝图中，但不属于 `P19+IM-1` 的首批协同覆盖范围。
 
-## 10. P19+ERP-1 已实现消费映射
-- `P19+ERP-1` 没有新增新的领域事件名；当前 ERP 一期真正落地消费的既有业务事实是 `reimbursement.paid`。
-- 运行时不会把 ERP 专有结构写回核心报销表，而是先构建标准化 `ReimbursementJournalSlice`，再通过 `erp.journal.export` 写入 `IntegrationOutbox` 异步派发。
-- `ReimbursementJournalSlice.sourceEventName` 固定为 `reimbursement.paid`，用于标记该凭证切片来源于“报销付款完成”这一既有业务事实。
-- ERP 主数据同步（`LegalEntity` / `CostCenter` / `Supplier`）属于主动 Pull，不作为新的领域事件名纳入本表。
-- `purchase_request.approved`、`asset.card.created`、`inventory_check.completed` 等事件仍只冻结名称与最小载荷；真实 ERP 导出留待后续 `P19+ERP-2 / ERP-3`。
+## 10. P19+ERP-1 / ERP-2 已实现消费映射
+- `P19+ERP-1` 没有新增新的领域事件名；ERP 一期真正落地消费的既有业务事实是 `reimbursement.paid`，运行时会先构建标准化 `ReimbursementJournalSlice`，再通过 `erp.journal.export` 写入 `IntegrationOutbox` 异步派发。
+- `ReimbursementJournalSlice.sourceEventName` 固定为 `reimbursement.paid`，用于标记该凭证切片来源于“报销付款完成”这一既有业务事实；历史 `erp.reimbursement.paid` outbox 仍继续兼容。
+- `P19+ERP-2` 正式冻结新增领域事件名 `purchase_order.archived`，并消费两类采购事实：
+  - `purchase_request.approved` → `PurchaseCommitmentJournalSlice` → `erp.journal.export`
+  - `purchase_order.archived` → `PurchaseAccrualJournalSlice` + `purchase_order_archive` summary → `erp.journal.export` / `erp.procurement.export`
+- 采购 ERP 成功派发后，运行时统一把外部 ERP 编号回写到 `integration_bindings`，分别对应 `purchase_request_commitment_journal`、`purchase_order_accrual_journal`、`purchase_order_po`、`purchase_order_contract`。
+- ERP 主数据同步（`LegalEntity` / `CostCenter` / `Supplier`）仍属于主动 Pull，不作为新的领域事件名纳入本表；`IntegrationSyncState` 也继续只承载主数据资源级同步状态，而不承载采购单据轨道。
+- `asset.card.created`、`inventory_check.completed` 等事件继续只冻结名称与最小载荷；真实 ERP 导出留待后续 `P19+ERP-3`。
diff --git a/docs/feature-matrix.md b/docs/feature-matrix.md
index cf93befe..8cc1c392 100644
--- a/docs/feature-matrix.md
+++ b/docs/feature-matrix.md
@@ -1,8 +1,8 @@
-# hyb-oa 实现状态矩阵（P5-P19+IM-1+ERP-1）
+# hyb-oa 实现状态矩阵（P5-P19+IM-1+ERP-2）
 
 **快照日期**：2026-03-08  
 **范围**：`F1-F42`（含 `F19b/F19c/F19d`）+ `R1-S2` + `P9A1-P9D1` + `P10E1-P10G1` + `G0-G6` + `H1` + `M1-M4` + `P13-0-P13-8` + `P14-0-P14-8` + `P15A-0-P15A-5` + `P15B-0-P15B-6` + `P16A-0-P16A-6` + `P16B-0-P16B-6` + `P16C-0-P16C-6` + `R9-0-R9-3` + `G2-0-G2-6` + `P17A-0-P17A-6` + `P17B-0-P17B-6` + `P18A-0-P18A-6` + `P18B-0-P18B-6` + `P19-0-P19-6` + `P19IM1-0-P19IM1-6` + `P19ERP1-0-P19ERP1-6`，共 206 项。  
-**事实源**：`issues/2026-02-09_13-39-02-p5-blueprint-v3.csv` + `issues/2026-02-09_23-30-00-p6-p8-remaining-work-master.csv` + `issues/2026-02-10_09-42-31-p9-maintenance-performance-matrix.csv` + `issues/2026-02-10_10-35-30-p10-production-hardening.csv` + `issues/2026-02-11-p11-p12-governance-mobile.csv` + `issues/2026-02-12_01-09-41-p13-l5-governance.csv` + `issues/2026-02-13_00-11-56-p14-l5-operationalization.csv` + `issues/2026-03-06_14-30-00-p15a-l5-permission-decouple.csv` + `issues/2026-03-06_14-30-00-p15b-l5-leave-v1.csv` + `issues/2026-03-07_13-47-05-p16a-l5-master-data-core.csv` + `issues/2026-03-07_16-22-07-p16b-l5-holiday-calendar.csv` + `issues/2026-03-07_17-14-39-p16c-l5-suppliers.csv` + `issues/2026-03-07_18-15-03-r9-g2-p19-roadmap-refresh.csv` + `issues/2026-03-07_18-16-00-g2-l5-cross-domain-bridge.csv` + `issues/2026-03-07_19-33-09-p17a-l5-procurement-core.csv` + `issues/2026-03-07_21-00-37-p17b-l5-procurement-budget-archive.csv` + `issues/2026-03-07_22-02-09-p18a-l5-asset-registry-core.csv` + `issues/2026-03-07_22-34-03-p18b-l5-asset-movements-inventory.csv` + `issues/2026-03-07_23-22-00-p19-l4-integration-readiness.csv` + `issues/2026-03-08_12-18-10-p19-im-1-l5-collaboration-adapter.csv` + `issues/2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv`（执行合同）
+**事实源**：`issues/2026-02-09_13-39-02-p5-blueprint-v3.csv` + `issues/2026-02-09_23-30-00-p6-p8-remaining-work-master.csv` + `issues/2026-02-10_09-42-31-p9-maintenance-performance-matrix.csv` + `issues/2026-02-10_10-35-30-p10-production-hardening.csv` + `issues/2026-02-11-p11-p12-governance-mobile.csv` + `issues/2026-02-12_01-09-41-p13-l5-governance.csv` + `issues/2026-02-13_00-11-56-p14-l5-operationalization.csv` + `issues/2026-03-06_14-30-00-p15a-l5-permission-decouple.csv` + `issues/2026-03-06_14-30-00-p15b-l5-leave-v1.csv` + `issues/2026-03-07_13-47-05-p16a-l5-master-data-core.csv` + `issues/2026-03-07_16-22-07-p16b-l5-holiday-calendar.csv` + `issues/2026-03-07_17-14-39-p16c-l5-suppliers.csv` + `issues/2026-03-07_18-15-03-r9-g2-p19-roadmap-refresh.csv` + `issues/2026-03-07_18-16-00-g2-l5-cross-domain-bridge.csv` + `issues/2026-03-07_19-33-09-p17a-l5-procurement-core.csv` + `issues/2026-03-07_21-00-37-p17b-l5-procurement-budget-archive.csv` + `issues/2026-03-07_22-02-09-p18a-l5-asset-registry-core.csv` + `issues/2026-03-07_22-34-03-p18b-l5-asset-movements-inventory.csv` + `issues/2026-03-07_23-22-00-p19-l4-integration-readiness.csv` + `issues/2026-03-08_12-18-10-p19-im-1-l5-collaboration-adapter.csv` + `issues/2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv` + `issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv`（执行合同）
 
 **说明**：
 - 本矩阵用于全局读图（审计/交接/回归覆盖追踪），不替代 `issues/*.csv` 的执行合同职责。
@@ -238,3 +238,12 @@
 | P19ERP1-5 | OpenAPI文档与矩阵同步 | N/A | 2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv | 2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv | 2026-03-08 | DONE | validate-feature-matrix | 集成边界、领域事件、Feature Matrix 与校验器同步到 `P5-P19+IM-1+ERP-1`，并纳入 ERP-1 合同事实源 |
 | P19ERP1-6 | P19ERP1回归与安全收口 | N/A | 2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv | 2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv | 2026-03-08 | DONE | server:test + regression-integrations + regression-all + client:typecheck/build | 主数据 Pull、报销凭证切片、ERP 管理入口、开关阻断与 dead_letter 重入全部通过，且既有主流程零回归 |
 
+
+| P19ERP2-0 | P19ERP2执行合同建档 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | CSV 校验 | 采购 ERP 双阶段出站执行合同建档，冻结 commitment / accrual / archive summary 三段模型 |
+| P19ERP2-1 | 采购ERP出站契约与provider扩展 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | server:test | 扩展 `erp.journal.export` / `erp.procurement.export` 契约、payload、dedupe 与采购 binding 回写规则 |
+| P19ERP2-2 | 采购审批与归档自动出站 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | server:test + regression-integrations | 采购审批自动入队 commitment，首次归档自动入队 accrual + summary，且 gate 关闭时仅 skip 不阻断业务 |
+| P19ERP2-3 | 采购ERP轨道查询与重试接口 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | server:test + regression-integrations | 新增采购 ERP track / requeue 接口，支持历史补发、失败重试与 archive summary 覆盖同步 |
+| P19ERP2-4 | 采购详情ERP轨道挂件 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | client:typecheck/build | `PurchaseRequestsPage` 归档区新增 ERP 三段轨道挂件，按权限区分查看与重试能力 |
+| P19ERP2-5 | 文档事件与矩阵同步 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | validate-feature-matrix | 集成边界、领域事件、Feature Matrix 与校验器同步到 `P5-P19+IM-1+ERP-2`，并纳入 ERP-2 合同事实源 |
+| P19ERP2-6 | P19ERP2回归与验收收口 | N/A | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | 2026-03-08 | DONE | server:test + regression-integrations + regression-all + client:typecheck/build | 采购双阶段 journal、archive summary 覆盖同步、详情挂件、权限边界与既有 ERP / IM 主流程回归全部通过 |
+
diff --git a/docs/integration-boundaries.md b/docs/integration-boundaries.md
index 2b8014e0..4b29b9e6 100644
--- a/docs/integration-boundaries.md
+++ b/docs/integration-boundaries.md
@@ -1,8 +1,8 @@
-# 集成边界冻结（P19 / P19+IM-1 / P19+ERP-1）
+# 集成边界冻结（P19 / P19+IM-1 / P19+ERP-2）
 
 **快照日期**：2026-03-08  
-**当前基线**：`P19+IM-1` 与 `P19+ERP-1` 已完成；当前运行时已落地企微群机器人 + 深链 + Outbox 异步派发的一期协同适配，以及 ERP 主数据 Pull / 报销付款凭证切片的一期桥接。  
-**目标**：在保持核心域稳定的前提下，冻结 ERP / IM / AI / MCP 的长期边界，并记录 IM 一期与 ERP 一期的已实现范围、禁入规则和后续扩展位。
+**当前基线**：`P19+IM-1`、`P19+ERP-1` 与 `P19+ERP-2` 已完成；当前运行时已落地企微群机器人 + 深链 + Outbox 异步派发的一期协同适配，以及 ERP 主数据 Pull、报销付款凭证切片、采购双阶段 journal 与归档摘要出站。  
+**目标**：在保持核心域稳定的前提下，冻结 ERP / IM / AI / MCP 的长期边界，并记录 IM 一期与 ERP 两期的已实现范围、禁入规则和后续扩展位。
 
 ## 1. 总体原则
 
@@ -48,7 +48,7 @@
 
 ### 2.4 建议后续专项
 - `P19+ERP-1`：主数据同步协议
-- `P19+ERP-2`：采购审批结果导出 / 回写协议
+- `P19+ERP-2`：采购双阶段 journal 与归档摘要出站
 - `P19+ERP-3`：资产台账摘要导出协议
 
 ### 2.5 P19+ERP-1 已实现范围
@@ -58,6 +58,14 @@
 - 已兼容保留历史 `erp.reimbursement.paid` 派发路径；成功导出后统一回写 `integration_bindings(provider=erp, entity_type=reimbursement_journal)`。
 - 已明确 `ERP_SYNC_ENABLED` 与 `erp_sync` feature flag 共同构成 ERP 管理端总闸，任一关闭都必须阻断主数据同步与手动导出。
 
+### 2.6 P19+ERP-2 已实现范围
+- 已冻结采购双阶段财务语义：`purchase_request.approved` 自动生成 `purchase_request_commitment` journal，`purchase_order.archived` 首次归档自动生成 `purchase_order_accrual` journal。
+- 已新增 `erp.procurement.export` 用于 `purchase_order_archive` 摘要出站；commitment / accrual 仍统一复用 `erp.journal.export`，避免额外拆分出站总线。
+- 已为 `purchase_order_archive` 建立“同一条 outbox 覆盖同步”语义：当 `poNo` / `contractNo` / `archivedFiles` 变化时，仅重置 summary 对应 outbox 并覆盖 payload，不重复创建 accrual journal。
+- 已在 `integration_bindings` 中落地采购映射：`purchase_request_commitment_journal`、`purchase_order_accrual_journal`、`purchase_order_po`、`purchase_order_contract`；成功派发后回写 ERP 外部编号与最近同步时间。
+- 已明确 `IntegrationSyncState` 继续只表示资源级主数据同步状态，不承载采购单据级轨道；采购详情轨道只允许由 `IntegrationOutbox + IntegrationBinding + 当前单据事实` 推导。
+- 已将采购 ERP 轨道挂件固定在采购详情 / 归档区：所有可读用户仅查看阶段状态，`integration.manage` 才能查看 ERP 外部编号并执行手动补发 / 重试。
+
 ## 3. IM / 协同适配边界
 
 ### 3.1 一期已实现能力（P19+IM-1）
diff --git a/issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv b/issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv
new file mode 100644
index 00000000..fe086915
--- /dev/null
+++ b/issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv
@@ -0,0 +1,8 @@
+ID,Title,Description,Acceptance,Test_Method,Tools,Dev_Status,Review1_Status,Regression_Status,Files,Dependencies,Notes
+P19ERP2-0,P19ERP2执行合同建档,创建并校验采购ERP双阶段出站执行合同CSV,CSV通过校验且字段完整,python3 /home/shunli/.codex/skills/plan/scripts/validate_issues_csv.py issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv,manual,DONE,DONE,DONE,issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv,[],P19ERP2固定为采购审批commitment + 归档accrual + 归档摘要出站
+P19ERP2-1,采购ERP出站契约与provider扩展,扩展journal与procurement export provider契约并定义payload/dedupe/binding规则,ERP journal与procurement summary均可通过现有dispatcher/outbox处理且不新增核心表ERP字段,cd server && npm run test,manual,DONE,DONE,DONE,server/src/services/integrations/erp.js | server/src/services/integrations/dispatcher.js | server/src/services/integrations/erpProcurement.js | server/tests,"[""P19ERP2-0""]",默认不新增Prisma表 继续复用IntegrationBinding与IntegrationOutbox
+P19ERP2-2,采购审批与归档自动出站,在purchase approval与archive-order落点自动入队commitment/accrual/archive summary并处理gate skip,审批与归档成功后业务事务不受ERP失败影响 且outbox/binding语义正确,cd server && npm run test && ./scripts/regression-integrations.sh,manual,DONE,DONE,DONE,server/src/routes/workflow.js | server/src/routes/purchaseRequests.js | server/src/services/integrations/outbox.js | server/tests,"[""P19ERP2-1""]",自动触发走strictDepartment=true 手动重试走strictDepartment=false
+P19ERP2-3,采购ERP轨道查询与重试接口,新增采购详情ERP轨道查询与requeue接口支持历史补发和失败重试,采购可读用户可看轨道 integration.manage可重试且开关关闭时正确阻断,cd server && npm run test && ./scripts/regression-integrations.sh,manual,DONE,DONE,DONE,server/src/routes/integrations.js | server/tests,"[""P19ERP2-2""]",archive summary允许同一条outbox在payload变化时重置覆盖
+P19ERP2-4,采购详情ERP轨道挂件,在PurchaseRequestsPage归档区下增加ERP轨道挂件与重试交互,详情页可展示三段轨道状态且权限边界正确,cd client && npm run typecheck && npm run build,manual,DONE,DONE,DONE,client/src/pages/PurchaseRequestsPage.tsx | client/src/api/purchaseRequests.ts,"[""P19ERP2-3""]",仅详情挂件 不新增ERP页采购面板
+P19ERP2-5,文档事件与矩阵同步,同步采购ERP-2边界 事件映射 Feature Matrix与校验器,矩阵标题更新为P5-P19+IM-1+ERP-2且总数为213,python3 scripts/validate-feature-matrix.py,manual,DONE,DONE,DONE,docs/integration-boundaries.md | docs/domain-events.md | docs/feature-matrix.md | scripts/validate-feature-matrix.py | issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv,"[""P19ERP2-4""]",新增purchase_order.archived事件并补采购ERP消费映射
+P19ERP2-6,P19ERP2回归与验收收口,完成采购双阶段出站 详情挂件与回归验证后收口,采购ERP happy path与失败重试通过且报销/请假/采购/资产/IM零回归,cd server && npm run test && ./scripts/regression-integrations.sh && OCR_PROVIDER=mock JOBS_ENABLED=false IM_NOTIFIER_ENABLED=true APP_ORIGIN='http://127.0.0.1:3000' ./scripts/regression-all.sh && cd ../client && npm run typecheck && npm run build,manual,DONE,DONE,DONE,issues/2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv | server/scripts/regression-integrations.sh | client/src/pages/PurchaseRequestsPage.tsx,"[""P19ERP2-5""]",重点核对archive summary覆盖同步 成功journal不可强制replay 权限边界与gate阻断
diff --git a/scripts/validate-feature-matrix.py b/scripts/validate-feature-matrix.py
index f4d9bf13..43a0cf53 100755
--- a/scripts/validate-feature-matrix.py
+++ b/scripts/validate-feature-matrix.py
@@ -40,6 +40,7 @@ CSV_FACT_SOURCES = [
     ROOT / "issues" / "2026-03-07_23-22-00-p19-l4-integration-readiness.csv",
     ROOT / "issues" / "2026-03-08_12-18-10-p19-im-1-l5-collaboration-adapter.csv",
     ROOT / "issues" / "2026-03-08_14-10-53-p19-erp-1-l5-masterdata-journal-bridge.csv",
+    ROOT / "issues" / "2026-03-08_22-46-51-p19-erp-2-l5-procurement-commitment-archive.csv",
 ]
 
 ID_PATTERN = re.compile(r"^[A-Z][0-9][0-9A-Za-z-]*$")
diff --git a/server/prisma/migrations/20260308153000_p19erp2_binding_entity_type_width/migration.sql b/server/prisma/migrations/20260308153000_p19erp2_binding_entity_type_width/migration.sql
new file mode 100644
index 00000000..3551b623
--- /dev/null
+++ b/server/prisma/migrations/20260308153000_p19erp2_binding_entity_type_width/migration.sql
@@ -0,0 +1,2 @@
+ALTER TABLE "integration_bindings"
+  ALTER COLUMN "entity_type" TYPE VARCHAR(64);
diff --git a/server/prisma/schema.prisma b/server/prisma/schema.prisma
index aa76a97c..1e913e55 100644
--- a/server/prisma/schema.prisma
+++ b/server/prisma/schema.prisma
@@ -1208,7 +1208,7 @@ model IntegrationOutbox {
 model IntegrationBinding {
   id            String    @id @default(uuid()) @db.Uuid
   provider      String    @db.VarChar(32)
-  entity_type   String    @db.VarChar(32)
+  entity_type   String    @db.VarChar(64)
   local_id      String    @db.Uuid
   external_id   String?   @db.VarChar(128)
   external_code String?   @db.VarChar(128)
diff --git a/server/scripts/regression-integrations.sh b/server/scripts/regression-integrations.sh
index 21b5509f..a4c6bd45 100755
--- a/server/scripts/regression-integrations.sh
+++ b/server/scripts/regression-integrations.sh
@@ -6,6 +6,10 @@ MOCK_ERP_PORT="${MOCK_ERP_PORT:-$((3900 + RANDOM % 500))}"
 APP_PORT="${APP_PORT:-$((4300 + RANDOM % 500))}"
 BASE_URL="http://127.0.0.1:${APP_PORT}"
 DEVICE_FINGERPRINT="${DEVICE_FINGERPRINT:-regression-integrations}"
+EMPLOYEE_IDENTIFIER="${EMPLOYEE_IDENTIFIER:-employee@hyinda.com}"
+EMPLOYEE_PASSWORD="${EMPLOYEE_PASSWORD:-EmployeePassword1234}"
+MANAGER_IDENTIFIER="${MANAGER_IDENTIFIER:-manager@hyinda.com}"
+MANAGER_PASSWORD="${MANAGER_PASSWORD:-ManagerPassword1234}"
 FINANCE_MGR_IDENTIFIER="${FINANCE_MGR_IDENTIFIER:-finance_mgr@hyinda.com}"
 FINANCE_MGR_PASSWORD="${FINANCE_MGR_PASSWORD:-FinanceMgrPassword1234}"
 RUN_SUFFIX="$(date +%s)-$RANDOM"
@@ -155,7 +159,11 @@ const server = http.createServer(async (req, res) => {
 
   if (
     req.method === 'POST' &&
-    (url.pathname === '/erp/journals/reimbursements/paid' || url.pathname === '/erp/reimbursements/paid')
+    (
+      url.pathname === '/erp/journals/export' ||
+      url.pathname === '/erp/journals/reimbursements/paid' ||
+      url.pathname === '/erp/reimbursements/paid'
+    )
   ) {
     const mode = url.searchParams.get('mode') || 'success';
     const chunks = [];
@@ -176,6 +184,7 @@ const server = http.createServer(async (req, res) => {
           ok: true,
           scenario: 'timeout',
           externalId: `ERP-TIMEOUT-${Date.now()}`,
+          externalCode: `ERP-TIMEOUT-${Date.now()}`,
           reimbursementId: parsedBody?.reimbursementId || parsedBody?.entityId || null,
         });
       }, 1500);
@@ -200,14 +209,68 @@ const server = http.createServer(async (req, res) => {
       });
     }
 
+    const documentNo = parsedBody?.documentNo || parsedBody?.formNumber || parsedBody?.entityId || Date.now();
     return sendJson(res, 200, {
       ok: true,
       scenario: 'success',
-      externalId: `ERP-${parsedBody?.documentNo || parsedBody?.formNumber || parsedBody?.entityId || Date.now()}`,
+      externalId: `ERP-${documentNo}`,
+      externalCode: `ERP-${documentNo}`,
       reimbursementId: parsedBody?.reimbursementId || parsedBody?.entityId || null,
     });
   }
 
+  if (req.method === 'POST' && url.pathname === '/erp/procurement/export') {
+    const mode = url.searchParams.get('mode') || 'success';
+    const chunks = [];
+    for await (const chunk of req) {
+      chunks.push(chunk);
+    }
+
+    let parsedBody = null;
+    try {
+      parsedBody = JSON.parse(Buffer.concat(chunks).toString('utf8') || '{}');
+    } catch {
+      parsedBody = null;
+    }
+
+    if (mode === 'timeout') {
+      setTimeout(() => {
+        sendJson(res, 200, {
+          ok: true,
+          externalPoId: `ERP-PO-${Date.now()}`,
+          externalPoNo: `ERP-PO-${parsedBody?.poNo || Date.now()}`,
+        });
+      }, 1500);
+      return;
+    }
+
+    if (mode === 'client') {
+      return sendJson(res, 422, {
+        ok: false,
+        code: 'invalid_payload',
+        message: 'mock procurement client error',
+      });
+    }
+
+    if (mode === 'server') {
+      return sendJson(res, 503, {
+        ok: false,
+        code: 'service_unavailable',
+        message: 'mock procurement server error',
+      });
+    }
+
+    return sendJson(res, 200, {
+      ok: true,
+      externalId: `ERP-PROC-${parsedBody?.poNo || parsedBody?.entityId || Date.now()}`,
+      externalCode: `ERP-PROC-${parsedBody?.poNo || parsedBody?.entityId || Date.now()}`,
+      externalPoId: parsedBody?.poNo ? `ERP-PO-${parsedBody.poNo}` : null,
+      externalPoNo: parsedBody?.poNo ? `ERP-PO-${parsedBody.poNo}` : null,
+      externalContractId: parsedBody?.contractNo ? `ERP-CT-${parsedBody.contractNo}` : null,
+      externalContractNo: parsedBody?.contractNo ? `ERP-CT-${parsedBody.contractNo}` : null,
+    });
+  }
+
   sendJson(res, 404, { ok: false, message: 'not_found' });
 });
 
@@ -239,9 +302,11 @@ start_app_server() {
   ERP_SYNC_ENABLED=true \
   ERP_SYNC_PROVIDER=http \
   ERP_MASTER_DATA_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/master-data/pull?mode=success" \
-  ERP_JOURNAL_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/journals/reimbursements/paid?mode=success" \
+  ERP_JOURNAL_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/journals/export?mode=success" \
+  ERP_PROCUREMENT_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/procurement/export?mode=success" \
   ERP_SYNC_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/reimbursements/paid?mode=success" \
   ERP_SYNC_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
+  ERP_PROCUREMENT_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
   ERP_MASTER_DATA_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
   ERP_SYNC_AUTH_TOKEN="" \
   node src/index.js >"$TMP_DIR/app.log" 2>&1 &
@@ -259,16 +324,45 @@ start_app_server() {
   exit 1
 }
 
-login_finance_mgr() {
-  local login_body="$TMP_DIR/login.json"
+login_user() {
+  local identifier="$1"
+  local password="$2"
+  local suffix="$3"
+  local out_file="$TMP_DIR/login-${suffix}.json"
   local login_status
-  login_status="$(curl -sS -o "$login_body" -w "%{http_code}" \
-    -X POST "$BASE_URL/api/auth/login" \
-    -H "content-type: application/json" \
-    -H "x-device-fingerprint: ${DEVICE_FINGERPRINT}-finance" \
-    -d "{\"identifier\":\"$FINANCE_MGR_IDENTIFIER\",\"password\":\"$FINANCE_MGR_PASSWORD\"}")"
-  assert_status "$login_status" "200" "finance_mgr login"
-  TOKEN="$(jq -er '.data.accessToken' "$login_body")"
+  login_status="$(
+    curl -sS -o "$out_file" -w "%{http_code}" \
+      -X POST "$BASE_URL/api/auth/login" \
+      -H "content-type: application/json" \
+      -H "x-device-fingerprint: ${DEVICE_FINGERPRINT}-${suffix}" \
+      -d "$(jq -nc --arg identifier "$identifier" --arg password "$password" '{identifier: $identifier, password: $password}')"
+  )"
+  assert_status "$login_status" "200" "login ${identifier}" "$out_file"
+  jq -er '.data.accessToken' "$out_file"
+}
+
+login_finance_mgr() {
+  TOKEN="$(login_user "$FINANCE_MGR_IDENTIFIER" "$FINANCE_MGR_PASSWORD" finance)"
+}
+
+api_json_auth() {
+  local method="$1"
+  local path="$2"
+  local token="$3"
+  local out_file="$4"
+  local body="${5:-}"
+
+  if [[ -n "$body" ]]; then
+    curl -sS -o "$out_file" -w "%{http_code}" \
+      -X "$method" "$BASE_URL$path" \
+      -H "authorization: Bearer $token" \
+      -H "content-type: application/json" \
+      -d "$body"
+  else
+    curl -sS -o "$out_file" -w "%{http_code}" \
+      -X "$method" "$BASE_URL$path" \
+      -H "authorization: Bearer $token"
+  fi
 }
 
 set_erp_flag() {
@@ -460,6 +554,175 @@ const { createPrismaClient } = require('./src/prismaClient');
 NODE
 }
 
+resolve_procurement_fixture_ids() {
+  DATABASE_URL="$DATABASE_URL" node - <<'NODE'
+require('dotenv/config');
+const { createPrismaClient } = require('./src/prismaClient');
+const { resolveApplicableBudgetPoolByContext } = require('./src/services/budgetPool');
+
+(async () => {
+  const { prisma, pool } = createPrismaClient();
+  await prisma.$connect();
+  try {
+    const employee = await prisma.employee.findUnique({
+      where: { email: process.env.SEED_EMPLOYEE_EMAIL ?? 'employee@hyinda.com' },
+      select: { department_id: true, legal_entity_id: true },
+    });
+    const costCenter = await prisma.costCenter.findFirst({
+      where: {
+        enabled: true,
+        archived_at: null,
+        legal_entity_id: employee.legal_entity_id,
+      },
+      orderBy: { created_at: 'asc' },
+      select: { id: true },
+    });
+    const supplier = await prisma.supplier.findFirst({
+      where: {
+        enabled: true,
+        archived_at: null,
+        OR: [{ legal_entity_id: employee.legal_entity_id }, { legal_entity_id: null }],
+      },
+      orderBy: { created_at: 'asc' },
+      select: { id: true },
+    });
+    const documentCategory = await prisma.documentCategory.findFirst({
+      where: {
+        enabled: true,
+        archived_at: null,
+        entity_type: 'purchase_request',
+      },
+      orderBy: { created_at: 'asc' },
+      select: { id: true },
+    });
+    const budgetPool = await resolveApplicableBudgetPoolByContext(prisma, {
+      departmentId: employee.department_id,
+      legalEntityId: employee.legal_entity_id,
+      costCenterId: costCenter?.id ?? null,
+      effectiveDate: new Date(),
+    });
+
+    process.stdout.write(
+      [
+        employee.legal_entity_id,
+        costCenter?.id ?? '',
+        supplier?.id ?? '',
+        documentCategory?.id ?? '',
+        budgetPool?.id ?? '',
+      ].join('\n'),
+    );
+  } finally {
+    await prisma.$disconnect();
+    await pool.end();
+  }
+})().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
+NODE
+}
+
+query_outbox_by_key() {
+  local event_type="$1"
+  local dedupe_key="$2"
+  DATABASE_URL="$DATABASE_URL" EVENT_TYPE="$event_type" DEDUPE_KEY="$dedupe_key" node <<'NODE'
+require('dotenv/config');
+const { createPrismaClient } = require('./src/prismaClient');
+
+(async () => {
+  const { prisma, pool } = createPrismaClient();
+  await prisma.$connect();
+  try {
+    const row = await prisma.integrationOutbox.findUnique({
+      where: {
+        event_type_dedupe_key: {
+          event_type: process.env.EVENT_TYPE,
+          dedupe_key: process.env.DEDUPE_KEY,
+        },
+      },
+      select: {
+        id: true,
+        event_type: true,
+        status: true,
+        attempts: true,
+        processed_at: true,
+        next_retry_at: true,
+        dead_letter_at: true,
+        last_error: true,
+        payload: true,
+      },
+    });
+    process.stdout.write(JSON.stringify(row ? {
+      id: row.id,
+      eventType: row.event_type,
+      status: row.status,
+      attempts: row.attempts,
+      processedAt: row.processed_at ? row.processed_at.toISOString() : null,
+      nextRetryAt: row.next_retry_at ? row.next_retry_at.toISOString() : null,
+      deadLetterAt: row.dead_letter_at ? row.dead_letter_at.toISOString() : null,
+      lastError: row.last_error,
+      payload: row.payload,
+    } : null));
+  } finally {
+    await prisma.$disconnect();
+    await pool.end();
+  }
+})().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
+NODE
+}
+
+query_binding_by_key() {
+  local entity_type="$1"
+  local local_id="$2"
+  DATABASE_URL="$DATABASE_URL" ENTITY_TYPE="$entity_type" LOCAL_ID="$local_id" node <<'NODE'
+require('dotenv/config');
+const { createPrismaClient } = require('./src/prismaClient');
+
+(async () => {
+  const { prisma, pool } = createPrismaClient();
+  await prisma.$connect();
+  try {
+    const row = await prisma.integrationBinding.findUnique({
+      where: {
+        provider_entity_type_local_id: {
+          provider: 'erp',
+          entity_type: process.env.ENTITY_TYPE,
+          local_id: process.env.LOCAL_ID,
+        },
+      },
+      select: {
+        external_id: true,
+        external_code: true,
+        last_synced_at: true,
+      },
+    });
+    process.stdout.write(JSON.stringify({
+      externalId: row?.external_id ?? null,
+      externalCode: row?.external_code ?? null,
+      lastSyncedAt: row?.last_synced_at ? row.last_synced_at.toISOString() : null,
+    }));
+  } finally {
+    await prisma.$disconnect();
+    await pool.end();
+  }
+})().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
+NODE
+}
+
+assert_outbox_absent_by_key() {
+  local event_type="$1"
+  local dedupe_key="$2"
+  local state_json
+  state_json="$(query_outbox_by_key "$event_type" "$dedupe_key")"
+  jq -e '. == null' <<<"$state_json" >/dev/null
+}
+
 assert_master_data_seeded() {
   DATABASE_URL="$DATABASE_URL" LEGAL_ENTITY_CODE="$LEGAL_ENTITY_CODE" COST_CENTER_CODE="$COST_CENTER_CODE" SUPPLIER_CODE="$SUPPLIER_CODE" node <<'NODE'
 require('dotenv/config');
@@ -497,16 +760,9 @@ NODE
 }
 
 run_outbox_once() {
-  local mode="$1"
-  DATABASE_URL="$DATABASE_URL" \
-  INTEGRATION_OUTBOX_BATCH_SIZE=500 \
-  ERP_SYNC_ENABLED=true \
-  ERP_SYNC_PROVIDER=http \
-  ERP_JOURNAL_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/journals/reimbursements/paid?mode=$mode" \
-  ERP_SYNC_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/reimbursements/paid?mode=$mode" \
-  ERP_SYNC_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
-  ERP_SYNC_AUTH_TOKEN="" \
-  npm run --silent job:integration-outbox-once >"$TMP_DIR/outbox-once.log"
+  local journal_mode="$1"
+  local procurement_mode="${2:-$journal_mode}"
+  DATABASE_URL="$DATABASE_URL"   INTEGRATION_OUTBOX_BATCH_SIZE=500   ERP_SYNC_ENABLED=true   ERP_SYNC_PROVIDER=http   ERP_JOURNAL_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/journals/export?mode=$journal_mode"   ERP_PROCUREMENT_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/procurement/export?mode=$procurement_mode"   ERP_SYNC_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/reimbursements/paid?mode=$journal_mode"   ERP_SYNC_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS"   ERP_PROCUREMENT_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS"   ERP_SYNC_AUTH_TOKEN=""   npm run --silent job:integration-outbox-once >"$TMP_DIR/outbox-once.log"
 }
 
 assert_pull_mode() {
@@ -553,6 +809,60 @@ api_post() {
     -d "$body"
 }
 
+create_and_approve_purchase() {
+  local employee_token="$1"
+  local manager_token="$2"
+  local title_suffix="$3"
+  local tmp_prefix="$4"
+
+  local create_status
+  create_status="$(api_json_auth POST "/api/purchase-requests" "$employee_token" "$TMP_DIR/${tmp_prefix}-create.json" '{}')"
+  assert_status "$create_status" "200" "create purchase ${title_suffix}" "$TMP_DIR/${tmp_prefix}-create.json"
+  local purchase_id
+  purchase_id="$(jq -er '.data.purchaseRequest.id' "$TMP_DIR/${tmp_prefix}-create.json")"
+
+  local patch_body
+  patch_body="$({
+    jq -nc \
+      --arg title "$title_suffix" \
+      --arg le "$LEGAL_ENTITY_ID" \
+      --arg cc "$COST_CENTER_ID" \
+      --arg sp "$SUPPLIER_ID" \
+      --arg dc "$DOCUMENT_CATEGORY_ID" \
+      '{title:$title, legalEntityId:$le, costCenterId:$cc, supplierId:$sp, documentCategoryId:$dc, items:[{description:"Laptop", specification:"14 inch", quantity:"2.00", unitPrice:"440.00", isAssetCandidate:true}] }'
+  })"
+  local patch_status
+  patch_status="$(api_json_auth PATCH "/api/purchase-requests/$purchase_id" "$employee_token" "$TMP_DIR/${tmp_prefix}-patch.json" "$patch_body")"
+  assert_status "$patch_status" "200" "patch purchase ${title_suffix}" "$TMP_DIR/${tmp_prefix}-patch.json"
+
+  local submit_status
+  submit_status="$(api_json_auth POST "/api/purchase-requests/$purchase_id/submit" "$employee_token" "$TMP_DIR/${tmp_prefix}-submit.json" '{}')"
+  assert_status "$submit_status" "200" "submit purchase ${title_suffix}" "$TMP_DIR/${tmp_prefix}-submit.json"
+  local task_id
+  task_id="$(jq -er '.data.currentTaskId' "$TMP_DIR/${tmp_prefix}-submit.json")"
+
+  local approve_status
+  approve_status="$(api_json_auth POST "/api/workflow/tasks/$task_id/approve" "$manager_token" "$TMP_DIR/${tmp_prefix}-approve.json" '{"comment":"approve procurement erp regression"}')"
+  assert_status "$approve_status" "200" "approve purchase ${title_suffix}" "$TMP_DIR/${tmp_prefix}-approve.json"
+  jq -e '.data.outcome == "approved" and .data.purchaseRequestStatus == "approved"' "$TMP_DIR/${tmp_prefix}-approve.json" >/dev/null
+
+  printf '%s\n%s' "$purchase_id" "$task_id"
+}
+
+archive_purchase_order() {
+  local finance_token="$1"
+  local purchase_id="$2"
+  local po_no="$3"
+  local contract_no="$4"
+  local tmp_prefix="$5"
+
+  local archive_status
+  archive_status="$(api_json_auth POST "/api/purchase-requests/$purchase_id/archive-order" "$finance_token" "$TMP_DIR/${tmp_prefix}-archive.json" "$(jq -nc --arg po "$po_no" --arg contract "$contract_no" '{poNo:$po, contractNo:$contract, archivedFiles:[]}')")"
+  assert_status "$archive_status" "200" "archive purchase ${purchase_id}" "$TMP_DIR/${tmp_prefix}-archive.json"
+  jq -e --arg po "$po_no" --arg contract "$contract_no" '.data.archiveOrder.poNo == $po and .data.archiveOrder.contractNo == $contract' "$TMP_DIR/${tmp_prefix}-archive.json" >/dev/null
+  jq -er '.data.archiveOrder.id' "$TMP_DIR/${tmp_prefix}-archive.json"
+}
+
 assert_export_mode_semantics() {
   local mode="$1"
   local state_json="$2"
@@ -692,7 +1002,95 @@ legacy_outbox_id="$(jq -er '.data.outboxId' "$legacy_body")"
 legacy_state="$(query_outbox_state "$legacy_outbox_id")"
 jq -e '.eventType == "erp.journal.export" and .status == "pending"' <<<"$legacy_state" >/dev/null
 
-echo "[9/9] ERP env gate off blocks sync"
+echo "[9/13] Procurement approval/archive auto export + bindings"
+EMPLOYEE_TOKEN="$(login_user "$EMPLOYEE_IDENTIFIER" "$EMPLOYEE_PASSWORD" employee)"
+MANAGER_TOKEN="$(login_user "$MANAGER_IDENTIFIER" "$MANAGER_PASSWORD" manager)"
+FINANCE_MGR_TOKEN="$TOKEN"
+mapfile -t FIXTURE_IDS < <(resolve_procurement_fixture_ids)
+LEGAL_ENTITY_ID="${FIXTURE_IDS[0]}"
+COST_CENTER_ID="${FIXTURE_IDS[1]}"
+SUPPLIER_ID="${FIXTURE_IDS[2]}"
+DOCUMENT_CATEGORY_ID="${FIXTURE_IDS[3]}"
+BUDGET_POOL_ID="${FIXTURE_IDS[4]}"
+
+mapfile -t PROCUREMENT_APPROVED < <(create_and_approve_purchase "$EMPLOYEE_TOKEN" "$MANAGER_TOKEN" "procurement erp success" "proc-success")
+PURCHASE_ID_APPROVED="${PROCUREMENT_APPROVED[0]}"
+COMMITMENT_DEDUPE="purchase_request:${PURCHASE_ID_APPROVED}:commitment"
+commitment_state="$(query_outbox_by_key 'erp.journal.export' "$COMMITMENT_DEDUPE")"
+jq -e '.status == "pending" and .payload.journalType == "purchase_request_commitment"' <<<"$commitment_state" >/dev/null
+run_outbox_once success success
+commitment_state_done="$(query_outbox_by_key 'erp.journal.export' "$COMMITMENT_DEDUPE")"
+jq -e '.status == "succeeded"' <<<"$commitment_state_done" >/dev/null
+commitment_binding="$(query_binding_by_key 'purchase_request_commitment_journal' "$PURCHASE_ID_APPROVED")"
+jq -e '.externalCode != null' <<<"$commitment_binding" >/dev/null
+
+ARCHIVE_ID_APPROVED="$(archive_purchase_order "$FINANCE_MGR_TOKEN" "$PURCHASE_ID_APPROVED" 'PO-P19ERP2-001' 'CT-P19ERP2-001' 'proc-success')"
+ACCRUAL_DEDUPE="purchase_order_archive:${ARCHIVE_ID_APPROVED}:accrual"
+SUMMARY_DEDUPE="purchase_order_archive:${ARCHIVE_ID_APPROVED}:summary"
+accrual_state="$(query_outbox_by_key 'erp.journal.export' "$ACCRUAL_DEDUPE")"
+summary_state="$(query_outbox_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE")"
+jq -e '.status == "pending" and .payload.journalType == "purchase_order_accrual"' <<<"$accrual_state" >/dev/null
+jq -e '.status == "pending" and .payload.exportType == "purchase_order_archive"' <<<"$summary_state" >/dev/null
+run_outbox_once success success
+accrual_state_done="$(query_outbox_by_key 'erp.journal.export' "$ACCRUAL_DEDUPE")"
+summary_state_done="$(query_outbox_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE")"
+jq -e '.status == "succeeded"' <<<"$accrual_state_done" >/dev/null
+jq -e '.status == "succeeded"' <<<"$summary_state_done" >/dev/null
+accrual_binding="$(query_binding_by_key 'purchase_order_accrual_journal' "$ARCHIVE_ID_APPROVED")"
+po_binding="$(query_binding_by_key 'purchase_order_po' "$ARCHIVE_ID_APPROVED")"
+contract_binding="$(query_binding_by_key 'purchase_order_contract' "$ARCHIVE_ID_APPROVED")"
+jq -e '.externalCode != null' <<<"$accrual_binding" >/dev/null
+jq -e '.externalCode != null' <<<"$po_binding" >/dev/null
+jq -e '.externalCode != null' <<<"$contract_binding" >/dev/null
+
+echo "[10/13] Archive update only resets summary"
+ARCHIVE_UPDATE_STATUS="$(api_json_auth POST "/api/purchase-requests/$PURCHASE_ID_APPROVED/archive-order" "$FINANCE_MGR_TOKEN" "$TMP_DIR/proc-success-archive-update.json" '{"poNo":"PO-P19ERP2-001","contractNo":"CT-P19ERP2-002","archivedFiles":[]}')"
+assert_status "$ARCHIVE_UPDATE_STATUS" "200" "archive update" "$TMP_DIR/proc-success-archive-update.json"
+accrual_state_after_update="$(query_outbox_by_key 'erp.journal.export' "$ACCRUAL_DEDUPE")"
+summary_state_after_update="$(query_outbox_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE")"
+ACCRUAL_OUTBOX_ID="$(jq -er '.id' <<<"$accrual_state_done")"
+SUMMARY_OUTBOX_ID="$(jq -er '.id' <<<"$summary_state_done")"
+jq -e --arg id "$ACCRUAL_OUTBOX_ID" '.id == $id and .status == "succeeded"' <<<"$accrual_state_after_update" >/dev/null
+jq -e --arg id "$SUMMARY_OUTBOX_ID" '.id == $id and .status == "pending" and .payload.contractNo == "CT-P19ERP2-002"' <<<"$summary_state_after_update" >/dev/null
+run_outbox_once success success
+contract_binding_updated="$(query_binding_by_key 'purchase_order_contract' "$ARCHIVE_ID_APPROVED")"
+jq -e '.externalCode != null' <<<"$contract_binding_updated" >/dev/null
+
+echo "[11/13] Force-off skips auto export and manual requeue backfills historical单据"
+set_erp_flag "force_off"
+mapfile -t PROCUREMENT_SKIPPED < <(create_and_approve_purchase "$EMPLOYEE_TOKEN" "$MANAGER_TOKEN" "procurement erp skipped" "proc-skipped")
+PURCHASE_ID_SKIPPED="${PROCUREMENT_SKIPPED[0]}"
+COMMITMENT_DEDUPE_SKIPPED="purchase_request:${PURCHASE_ID_SKIPPED}:commitment"
+assert_outbox_absent_by_key 'erp.journal.export' "$COMMITMENT_DEDUPE_SKIPPED"
+ARCHIVE_ID_SKIPPED="$(archive_purchase_order "$FINANCE_MGR_TOKEN" "$PURCHASE_ID_SKIPPED" 'PO-P19ERP2-101' 'CT-P19ERP2-101' 'proc-skipped')"
+ACCRUAL_DEDUPE_SKIPPED="purchase_order_archive:${ARCHIVE_ID_SKIPPED}:accrual"
+SUMMARY_DEDUPE_SKIPPED="purchase_order_archive:${ARCHIVE_ID_SKIPPED}:summary"
+assert_outbox_absent_by_key 'erp.journal.export' "$ACCRUAL_DEDUPE_SKIPPED"
+assert_outbox_absent_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE_SKIPPED"
+set_erp_flag "force_on"
+PROC_REQUEUE_CODE="$(api_json_auth POST "/api/integrations/erp/procurement/purchase-requests/$PURCHASE_ID_SKIPPED/requeue?runNow=0" "$FINANCE_MGR_TOKEN" "$TMP_DIR/proc-requeue.json" '{"targets":["commitment_journal","accrual_journal","archive_summary"]}')"
+assert_status "$PROC_REQUEUE_CODE" "200" "procurement requeue" "$TMP_DIR/proc-requeue.json"
+jq -e '.data.items | length == 3' "$TMP_DIR/proc-requeue.json" >/dev/null
+run_outbox_once success success
+jq -e '.status == "succeeded"' <<<"$(query_outbox_by_key 'erp.journal.export' "$COMMITMENT_DEDUPE_SKIPPED")" >/dev/null
+jq -e '.status == "succeeded"' <<<"$(query_outbox_by_key 'erp.journal.export' "$ACCRUAL_DEDUPE_SKIPPED")" >/dev/null
+jq -e '.status == "succeeded"' <<<"$(query_outbox_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE_SKIPPED")" >/dev/null
+
+echo "[12/13] Archive summary dead-letter can requeue same outbox"
+PROC_SUMMARY_FAIL_STATUS="$(api_json_auth POST "/api/purchase-requests/$PURCHASE_ID_APPROVED/archive-order" "$FINANCE_MGR_TOKEN" "$TMP_DIR/proc-summary-fail-archive.json" '{"poNo":"PO-P19ERP2-001","contractNo":"CT-P19ERP2-003","archivedFiles":[]}')"
+assert_status "$PROC_SUMMARY_FAIL_STATUS" "200" "archive update for summary failure" "$TMP_DIR/proc-summary-fail-archive.json"
+run_outbox_once success client
+summary_dead_state="$(query_outbox_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE")"
+jq -e '.status == "dead_letter" and .attempts == 1' <<<"$summary_dead_state" >/dev/null
+SUMMARY_DEAD_ID="$(jq -er '.id' <<<"$summary_dead_state")"
+PROC_SUMMARY_REQUEUE_CODE="$(api_json_auth POST "/api/integrations/erp/procurement/purchase-requests/$PURCHASE_ID_APPROVED/requeue?runNow=0" "$FINANCE_MGR_TOKEN" "$TMP_DIR/proc-summary-requeue.json" '{"targets":["archive_summary"]}')"
+assert_status "$PROC_SUMMARY_REQUEUE_CODE" "200" "procurement summary requeue" "$TMP_DIR/proc-summary-requeue.json"
+jq -e --arg id "$SUMMARY_DEAD_ID" '.data.items[0].outboxId == $id and .data.items[0].requeued == true' "$TMP_DIR/proc-summary-requeue.json" >/dev/null
+run_outbox_once success success
+summary_requeue_state="$(query_outbox_by_key 'erp.procurement.export' "$SUMMARY_DEDUPE")"
+jq -e --arg id "$SUMMARY_DEAD_ID" '.id == $id and .status == "succeeded"' <<<"$summary_requeue_state" >/dev/null
+
+ echo "[13/13] ERP env gate off blocks sync"
 if kill -0 "$APP_SERVER_PID" >/dev/null 2>&1; then
   kill "$APP_SERVER_PID" >/dev/null 2>&1 || true
   wait "$APP_SERVER_PID" >/dev/null 2>&1 || true
@@ -705,8 +1103,10 @@ OCR_PROVIDER=mock \
 ERP_SYNC_ENABLED=false \
 ERP_SYNC_PROVIDER=http \
 ERP_MASTER_DATA_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/master-data/pull?mode=success" \
-ERP_JOURNAL_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/journals/reimbursements/paid?mode=success" \
+ERP_JOURNAL_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/journals/export?mode=success" \
+ERP_PROCUREMENT_EXPORT_ENDPOINT="http://127.0.0.1:$MOCK_ERP_PORT/erp/procurement/export?mode=success" \
 ERP_SYNC_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
+ERP_PROCUREMENT_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
 ERP_MASTER_DATA_TIMEOUT_MS="$ERP_SYNC_TIMEOUT_MS" \
 ERP_SYNC_AUTH_TOKEN="" \
 node src/index.js >"$TMP_DIR/app-gate-off.log" 2>&1 &
diff --git a/server/src/config.js b/server/src/config.js
index d76cf935..9b25141a 100644
--- a/server/src/config.js
+++ b/server/src/config.js
@@ -109,8 +109,12 @@ function getConfig() {
     erpSyncProvider: process.env.ERP_SYNC_PROVIDER ?? "mock",
     erpSyncEndpoint: process.env.ERP_SYNC_ENDPOINT ?? "",
     erpJournalExportEndpoint: process.env.ERP_JOURNAL_EXPORT_ENDPOINT ?? "",
+    erpProcurementExportEndpoint: process.env.ERP_PROCUREMENT_EXPORT_ENDPOINT ?? "",
     erpMasterDataEndpoint: process.env.ERP_MASTER_DATA_ENDPOINT ?? "",
     erpSyncTimeoutMs: Number(process.env.ERP_SYNC_TIMEOUT_MS ?? 5000),
+    erpProcurementTimeoutMs: Number(
+      process.env.ERP_PROCUREMENT_TIMEOUT_MS ?? process.env.ERP_SYNC_TIMEOUT_MS ?? 5000,
+    ),
     erpMasterDataTimeoutMs: Number(
       process.env.ERP_MASTER_DATA_TIMEOUT_MS ?? process.env.ERP_SYNC_TIMEOUT_MS ?? 5000,
     ),
diff --git a/server/src/jobs/integrationOutboxJob.js b/server/src/jobs/integrationOutboxJob.js
index fca21d39..3a1d6a8f 100644
--- a/server/src/jobs/integrationOutboxJob.js
+++ b/server/src/jobs/integrationOutboxJob.js
@@ -41,6 +41,17 @@ async function runIntegrationOutboxOnce(prisma, config, logger) {
           reimbursementId:
             item.payload?.reimbursementId ??
             (item.payload?.entityType === 'reimbursement_form' ? item.payload?.entityId ?? null : null),
+          purchaseRequestId:
+            item.payload?.purchaseRequestId ??
+            item.payload?.references?.purchaseRequestId ??
+            (item.payload?.entityType === 'purchase_request' ? item.payload?.entityId ?? null : null),
+          purchaseOrderArchiveId:
+            item.payload?.purchaseOrderArchiveId ??
+            item.payload?.references?.purchaseOrderArchiveId ??
+            (item.payload?.entityType === 'purchase_order_archive' ? item.payload?.entityId ?? null : null),
+          journalType: item.payload?.journalType ?? null,
+          poNo: item.payload?.poNo ?? item.payload?.references?.poNo ?? null,
+          contractNo: item.payload?.contractNo ?? item.payload?.references?.contractNo ?? null,
           entityType: item.payload?.entityType ?? null,
           entityId: item.payload?.entityId ?? null,
           channelId: item.payload?.channelId ?? null,
diff --git a/server/src/routes/integrations.js b/server/src/routes/integrations.js
index bd818b8d..b24e27d1 100644
--- a/server/src/routes/integrations.js
+++ b/server/src/routes/integrations.js
@@ -19,12 +19,28 @@ const {
   buildReimbursementJournalPreview,
   enqueueReimbursementJournalExport,
 } = require('../services/integrations/erpJournal');
+const {
+  PROCUREMENT_ERP_TARGETS,
+  buildPurchaseRequestErpTrack,
+  enqueuePurchaseAccrualJournalExport,
+  enqueuePurchaseArchiveSummaryExport,
+  enqueuePurchaseCommitmentJournalExport,
+  loadPurchaseRequestErpContext,
+} = require('../services/integrations/erpProcurement');
 
 const UUID_SCHEMA = z.string().uuid();
 const MASTER_DATA_RESOURCE_ENUM = z.enum(['legal_entity', 'cost_center', 'supplier']);
 const MASTER_DATA_SYNC_BODY_SCHEMA = z.object({
   resources: z.array(MASTER_DATA_RESOURCE_ENUM).max(3).optional(),
 });
+const PROCUREMENT_REQUEUE_TARGET_ENUM = z.enum([
+  'commitment_journal',
+  'accrual_journal',
+  'archive_summary',
+]);
+const PROCUREMENT_REQUEUE_BODY_SCHEMA = z.object({
+  targets: z.array(PROCUREMENT_REQUEUE_TARGET_ENUM).min(1).max(3),
+});
 
 const ERP_SYNC_RESPONSE_SCHEMA = {
   type: 'object',
@@ -195,6 +211,145 @@ function ensurePaidReimbursement(reimbursement) {
   }
 }
 
+function canReadPurchaseRequest(request, purchaseRequest) {
+  if (!purchaseRequest) {
+    return false;
+  }
+
+  const permissionCodes = request?.employee?.permissionCodes ?? [];
+  if (permissionCodes.includes('*') || permissionCodes.includes('procurement.view_all') || permissionCodes.includes('procurement.manage')) {
+    return true;
+  }
+
+  return (
+    purchaseRequest.applicant_id === request.employee.id ||
+    purchaseRequest.submitter_id === request.employee.id
+  );
+}
+
+function normalizeProcurementTargets(body) {
+  const parsed = PROCUREMENT_REQUEUE_BODY_SCHEMA.safeParse(body ?? {});
+  if (!parsed.success) {
+    throw new AppError({
+      code: 'VALID_001',
+      message: '参数校验失败',
+      statusCode: 400,
+      details: parsed.error.flatten(),
+    });
+  }
+
+  const orderedTargets = [
+    PROCUREMENT_ERP_TARGETS.commitmentJournal,
+    PROCUREMENT_ERP_TARGETS.accrualJournal,
+    PROCUREMENT_ERP_TARGETS.archiveSummary,
+  ];
+  const requested = new Set(parsed.data.targets);
+  return orderedTargets.filter((target) => requested.has(target));
+}
+
+async function fetchReadablePurchaseRequestContext(prisma, purchaseRequestId, request) {
+  const context = await loadPurchaseRequestErpContext(prisma, purchaseRequestId);
+  if (!context?.purchaseRequest) {
+    throw new AppError({
+      code: 'SYS_404',
+      message: 'Not Found',
+      statusCode: 404,
+    });
+  }
+
+  if (!canReadPurchaseRequest(request, context.purchaseRequest)) {
+    throw new AppError({
+      code: 'PERM_001',
+      message: '无权限',
+      statusCode: 403,
+    });
+  }
+
+  return context;
+}
+
+function ensureProcurementTargetEligible(target, context) {
+  const purchaseRequest = context?.purchaseRequest;
+  const archive = purchaseRequest?.order_archive ?? null;
+
+  if (target === PROCUREMENT_ERP_TARGETS.commitmentJournal) {
+    if (purchaseRequest?.status !== 'approved') {
+      throw new AppError({
+        code: 'VALID_001',
+        message: '参数校验失败',
+        statusCode: 409,
+        details: { purchaseRequest: 'purchase_request_not_approved', target },
+      });
+    }
+    return;
+  }
+
+  if (!archive) {
+    throw new AppError({
+      code: 'VALID_001',
+      message: '参数校验失败',
+      statusCode: 409,
+      details: { purchaseOrderArchive: 'purchase_order_archive_missing', target },
+    });
+  }
+}
+
+async function enqueueProcurementTargetsAndMaybeRun({
+  prisma,
+  config,
+  logger,
+  context,
+  actorId,
+  targets,
+  runNow,
+}) {
+  const purchaseRequest = context.purchaseRequest;
+  const archive = purchaseRequest.order_archive ?? null;
+  const items = [];
+
+  for (const target of targets) {
+    ensureProcurementTargetEligible(target, context);
+
+    if (target === PROCUREMENT_ERP_TARGETS.commitmentJournal) {
+      const enqueued = await enqueuePurchaseCommitmentJournalExport(prisma, config, {
+        purchaseRequest,
+        occurredAt: context.approvalOccurredAt ?? new Date(),
+        actorId,
+        requeueOnFailure: true,
+      });
+      items.push({ target, ...enqueued });
+      continue;
+    }
+
+    if (target === PROCUREMENT_ERP_TARGETS.accrualJournal) {
+      const enqueued = await enqueuePurchaseAccrualJournalExport(prisma, config, {
+        purchaseRequest,
+        archive,
+        occurredAt: archive.archived_at ?? new Date(),
+        actorId,
+        requeueOnFailure: true,
+      });
+      items.push({ target, ...enqueued });
+      continue;
+    }
+
+    const enqueued = await enqueuePurchaseArchiveSummaryExport(prisma, config, {
+      purchaseRequest,
+      archive,
+      archivedAt: archive.archived_at ?? new Date(),
+      actorId,
+      requeueOnFailure: true,
+    });
+    items.push({ target, ...enqueued });
+  }
+
+  if (runNow && items.some((item) => !item.duplicated || item.requeued)) {
+    await runIntegrationOutboxOnce(prisma, config, logger);
+  }
+
+  return items;
+}
+
 async function enqueueReimbursementExportAndMaybeRun({
   prisma,
   config,
@@ -454,6 +609,148 @@ async function integrationsRoutes(fastify) {
     },
   );
 
+  fastify.get(
+    '/integrations/erp/procurement/purchase-requests/:purchaseRequestId/track',
+    {
+      preHandler: fastify.authenticate,
+      schema: {
+        tags: ['integrations'],
+        summary: '查询采购 ERP 同步轨道',
+        security: [{ bearerAuth: [] }],
+        params: {
+          type: 'object',
+          required: ['purchaseRequestId'],
+          properties: {
+            purchaseRequestId: { type: 'string', format: 'uuid' },
+          },
+        },
+      },
+    },
+    async (request, reply) => {
+      const parsedId = UUID_SCHEMA.safeParse(request.params?.purchaseRequestId);
+      if (!parsedId.success) {
+        throw new AppError({
+          code: 'VALID_001',
+          message: '参数校验失败',
+          statusCode: 400,
+          details: { purchaseRequestId: 'invalid_uuid' },
+        });
+      }
+
+      const [context, gate] = await Promise.all([
+        fetchReadablePurchaseRequestContext(fastify.prisma, parsedId.data, request),
+        resolveErpGate(fastify.prisma, fastify.config),
+      ]);
+      const canManage = fastify.hasPermission(request.employee, 'integration.manage');
+      const track = await buildPurchaseRequestErpTrack(fastify.prisma, fastify.config, parsedId.data, {
+        context,
+        canManage,
+        gate,
+      });
+
+      return sendData(reply, request, track);
+    },
+  );
+
+  fastify.post(
+    '/integrations/erp/procurement/purchase-requests/:purchaseRequestId/requeue',
+    {
+      preHandler: fastify.requirePermission('integration.manage'),
+      schema: {
+        tags: ['integrations'],
+        summary: '重试或补发采购 ERP 同步',
+        security: [{ bearerAuth: [] }],
+        params: {
+          type: 'object',
+          required: ['purchaseRequestId'],
+          properties: {
+            purchaseRequestId: { type: 'string', format: 'uuid' },
+          },
+        },
+        querystring: {
+          type: 'object',
+          properties: {
+            runNow: {
+              anyOf: [
+                { type: 'string', enum: ['0', '1', 'false', 'true'] },
+                { type: 'boolean' },
+              ],
+            },
+          },
+          additionalProperties: true,
+        },
+      },
+    },
+    async (request, reply) => {
+      const parsedId = UUID_SCHEMA.safeParse(request.params?.purchaseRequestId);
+      if (!parsedId.success) {
+        throw new AppError({
+          code: 'VALID_001',
+          message: '参数校验失败',
+          statusCode: 400,
+          details: { purchaseRequestId: 'invalid_uuid' },
+        });
+      }
+
+      const targets = normalizeProcurementTargets(request.body);
+      const gate = await requireErpManagementGate(fastify.prisma, fastify.config);
+      const context = await loadPurchaseRequestErpContext(fastify.prisma, parsedId.data);
+      if (!context?.purchaseRequest) {
+        throw new AppError({
+          code: 'SYS_404',
+          message: 'Not Found',
+          statusCode: 404,
+        });
+      }
+
+      const items = await enqueueProcurementTargetsAndMaybeRun({
+        prisma: fastify.prisma,
+        config: fastify.config,
+        logger: fastify.log,
+        context,
+        actorId: request.employee.id,
+        targets,
+        runNow: parseRunNow(request.query),
+      });
+
+      for (const item of items) {
+        await fastify.prisma.auditLog.create({
+          data: buildAuditLogData(request, {
+            actorId: request.employee.id,
+            action: 'ERP_SYNC_ENQUEUED',
+            targetType: item.target === PROCUREMENT_ERP_TARGETS.commitmentJournal ? 'purchase_request' : 'purchase_order_archive',
+            targetId:
+              item.target === PROCUREMENT_ERP_TARGETS.commitmentJournal
+                ? context.purchaseRequest.id
+                : context.purchaseRequest.order_archive?.id ?? null,
+            extra: {
+              erpTarget: item.target,
+              eventType: item.eventType,
+              purchaseRequestId: context.purchaseRequest.id,
+              purchaseOrderArchiveId: context.purchaseRequest.order_archive?.id ?? null,
+              outboxId: item.id,
+              duplicated: item.duplicated,
+              requeued: item.requeued,
+              gateReason: gate.effectiveReason,
+              featureFlag: FEATURE_FLAG_KEYS.erpSync,
+            },
+          }),
+        });
+      }
+
+      return sendData(reply, request, {
+        items: items.map((item) => ({
+          target: item.target,
+          outboxId: item.id,
+          status: item.status,
+          duplicated: item.duplicated,
+          requeued: item.requeued,
+          eventType: item.eventType,
+        })),
+      });
+    },
+  );
+
   fastify.post(
     '/integrations/erp/sync/:reimbursementId',
     {
@@ -555,6 +852,9 @@ async function integrationsRoutes(fastify) {
 }
 
 integrationsRoutes.__testables = {
+  canReadPurchaseRequest,
+  ensureProcurementTargetEligible,
+  normalizeProcurementTargets,
   normalizeResourcesInput,
   parseRunNow,
 };
diff --git a/server/src/routes/purchaseRequests.js b/server/src/routes/purchaseRequests.js
index c0c2c488..5ccf0731 100644
--- a/server/src/routes/purchaseRequests.js
+++ b/server/src/routes/purchaseRequests.js
@@ -11,6 +11,13 @@ const { signPayload, verifyToken } = require("../utils/signedUrl");
 const { parseWorkflowSteps, resolveActionableStep, toMoneyString } = require("../utils/workflow");
 const { resolveApplicableBudgetPoolByContext } = require("../services/budgetPool");
 const { issueDocumentNumber } = require("../services/documentSequence");
+const { FEATURE_FLAG_KEYS, evaluateFeatureFlag } = require("../services/featureFlags");
+const {
+  PROCUREMENT_ERP_TARGETS,
+  enqueuePurchaseAccrualJournalExport,
+  enqueuePurchaseArchiveSummaryExport,
+  loadPurchaseRequestErpContext,
+} = require("../services/integrations/erpProcurement");
 const { reserveBudgetForEntity, releaseReservedBudgetIfAny } = require("../services/purchaseBudget");
 const { sendNotificationEmailSafe } = require("../services/email");
 const { createNotifications, resolveRecipientsForAssignee } = require("../services/notifications");
@@ -837,6 +844,116 @@ async function loadReadablePurchaseRequest(tx, purchaseRequestId, request) {
   return purchaseRequest;
 }
 
+async function handlePurchaseArchiveErpSync({
+  tx,
+  config,
+  request,
+  actorId,
+  purchaseRequestId,
+  archiveId,
+  isFirstArchive,
+  loadContext = loadPurchaseRequestErpContext,
+  evaluateGate = evaluateFeatureFlag,
+  enqueueAccrual = enqueuePurchaseAccrualJournalExport,
+  enqueueSummary = enqueuePurchaseArchiveSummaryExport,
+}) {
+  const context = await loadContext(tx, purchaseRequestId);
+  if (!context?.purchaseRequest?.order_archive) {
+    return { skipped: true, reason: 'purchase_order_archive_missing' };
+  }
+
+  const purchaseRequest = context.purchaseRequest;
+  const archive = purchaseRequest.order_archive;
+  const departmentId = purchaseRequest.department_id ?? request.employee.department_id ?? null;
+  const gate = await evaluateGate({
+    prisma: tx,
+    config,
+    flagKey: FEATURE_FLAG_KEYS.erpSync,
+    departmentId,
+    strictDepartment: true,
+  });
+
+  if (!gate.enabled) {
+    const skipTargets = isFirstArchive
+      ? [PROCUREMENT_ERP_TARGETS.accrualJournal, PROCUREMENT_ERP_TARGETS.archiveSummary]
+      : [PROCUREMENT_ERP_TARGETS.archiveSummary];
+
+    for (const erpTarget of skipTargets) {
+      await tx.auditLog.create({
+        data: buildAuditLogData(request, {
+          actorId,
+          action: 'ERP_SYNC_SKIPPED_BY_FEATURE_FLAG',
+          targetType: 'purchase_order_archive',
+          targetId: archiveId,
+          extra: {
+            erpTarget,
+            eventType: erpTarget === PROCUREMENT_ERP_TARGETS.archiveSummary ? 'erp.procurement.export' : 'erp.journal.export',
+            purchaseRequestId,
+            purchaseOrderArchiveId: archiveId,
+            gateReason: gate.reason,
+            featureFlag: FEATURE_FLAG_KEYS.erpSync,
+            departmentId,
+          },
+        }),
+      });
+    }
+
+    return { skipped: true, gate, purchaseRequest, archive };
+  }
+
+  const enqueuedItems = [];
+  if (isFirstArchive) {
+    const accrual = await enqueueAccrual(tx, config, {
+      purchaseRequest,
+      archive,
+      occurredAt: archive.archived_at ?? new Date(),
+      actorId,
+      requeueOnFailure: false,
+    });
+    enqueuedItems.push(accrual);
+  }
+
+  const summary = await enqueueSummary(tx, config, {
+    purchaseRequest,
+    archive,
+    archivedAt: archive.archived_at ?? new Date(),
+    actorId,
+    requeueOnFailure: false,
+  });
+  enqueuedItems.push(summary);
+
+  for (const item of enqueuedItems) {
+    await tx.auditLog.create({
+      data: buildAuditLogData(request, {
+        actorId,
+        action: 'ERP_SYNC_ENQUEUED',
+        targetType: 'purchase_order_archive',
+        targetId: archiveId,
+        extra: {
+          erpTarget: item.erpTarget,
+          eventType: item.eventType,
+          purchaseRequestId,
+          purchaseOrderArchiveId: archiveId,
+          outboxId: item.id,
+          duplicated: item.duplicated,
+          requeued: item.requeued,
+          gateReason: gate.reason,
+          featureFlag: FEATURE_FLAG_KEYS.erpSync,
+          departmentId,
+        },
+      }),
+    });
+  }
+
+  return {
+    skipped: false,
+    gate,
+    purchaseRequest,
+    archive,
+    items: enqueuedItems,
+  };
+}
+
 async function purchaseRequestRoutes(fastify) {
   fastify.get(
     "/purchase-requests",
@@ -1527,6 +1644,11 @@ async function purchaseRequestRoutes(fastify) {
           throw buildValidationError({ status: "only_approved_archivable" }, 409);
         }
 
+        const existingArchive = await tx.purchaseOrderArchive.findUnique({
+          where: { purchase_request_id: purchaseRequestId },
+          select: { id: true },
+        });
+
         const archive = await tx.purchaseOrderArchive.upsert({
           where: { purchase_request_id: purchaseRequestId },
           update: {
@@ -1575,6 +1697,23 @@ async function purchaseRequestRoutes(fastify) {
           }),
         });
 
+        try {
+          await handlePurchaseArchiveErpSync({
+            tx,
+            config: fastify.config,
+            request,
+            actorId: request.employee.id,
+            purchaseRequestId,
+            archiveId: archive.id,
+            isFirstArchive: !existingArchive,
+          });
+        } catch (error) {
+          fastify.log.error(
+            { err: error, purchaseRequestId, purchaseOrderArchiveId: archive.id },
+            "Failed to enqueue purchase archive ERP events",
+          );
+        }
+
         response = {
           archiveOrder: mapPurchaseOrderArchive(archive),
         };
@@ -1942,3 +2081,8 @@ async function purchaseRequestRoutes(fastify) {
 }
 
 module.exports = purchaseRequestRoutes;
+
+module.exports.__testables = {
+  handlePurchaseArchiveErpSync,
+  parseArchiveBody,
+};
diff --git a/server/src/routes/workflow.js b/server/src/routes/workflow.js
index 6cb03f01..89e6704b 100644
--- a/server/src/routes/workflow.js
+++ b/server/src/routes/workflow.js
@@ -1,10 +1,17 @@
 const { z } = require("zod");
 const { AppError } = require("../utils/AppError");
+const { buildAuditLogData } = require("../utils/audit");
 const { sendData } = require("../utils/reply");
 const { resolvePermissionsForRoles, hasPermission, ROLE_PERMISSIONS, resolveEntityPermission } = require("../constants/permissions");
 const { getWorkflowStepsSnapshot, resolveActionableStep, toMoneyString } = require("../utils/workflow");
 const { consumeReservedLeave, releaseReservedLeave, formatDateOnly } = require("../services/leave");
+const { FEATURE_FLAG_KEYS, evaluateFeatureFlag } = require("../services/featureFlags");
 const { confirmBudgetForEntity, releaseReservedBudgetIfAny } = require("../services/purchaseBudget");
+const {
+  PROCUREMENT_ERP_TARGETS,
+  enqueuePurchaseCommitmentJournalExport,
+  loadPurchaseRequestErpContext,
+} = require("../services/integrations/erpProcurement");
 const {
   createNotifications,
   resolveRecipientsForAssignee,
@@ -97,6 +104,89 @@ function parseTaskId(taskId) {
   return parsed.data;
 }
 
+async function handlePurchaseApprovalErpSync({
+  tx,
+  config,
+  request,
+  actorId,
+  purchaseRequestId,
+  loadContext = loadPurchaseRequestErpContext,
+  evaluateGate = evaluateFeatureFlag,
+  enqueueCommitment = enqueuePurchaseCommitmentJournalExport,
+}) {
+  const context = await loadContext(tx, purchaseRequestId);
+  if (!context?.purchaseRequest) {
+    return { skipped: true, reason: 'purchase_request_not_found' };
+  }
+
+  const purchaseRequest = context.purchaseRequest;
+  const departmentId = purchaseRequest.department_id ?? request.employee.department_id ?? null;
+  const gate = await evaluateGate({
+    prisma: tx,
+    config,
+    flagKey: FEATURE_FLAG_KEYS.erpSync,
+    departmentId,
+    strictDepartment: true,
+  });
+
+  if (!gate.enabled) {
+    await tx.auditLog.create({
+      data: buildAuditLogData(request, {
+        actorId,
+        action: 'ERP_SYNC_SKIPPED_BY_FEATURE_FLAG',
+        targetType: 'purchase_request',
+        targetId: purchaseRequest.id,
+        extra: {
+          erpTarget: PROCUREMENT_ERP_TARGETS.commitmentJournal,
+          eventType: 'erp.journal.export',
+          purchaseRequestId: purchaseRequest.id,
+          purchaseOrderArchiveId: null,
+          gateReason: gate.reason,
+          featureFlag: FEATURE_FLAG_KEYS.erpSync,
+          departmentId,
+        },
+      }),
+    });
+
+    return { skipped: true, gate, purchaseRequest };
+  }
+
+  const enqueued = await enqueueCommitment(tx, config, {
+    purchaseRequest,
+    occurredAt: context.approvalOccurredAt ?? new Date(),
+    actorId,
+    requeueOnFailure: false,
+  });
+
+  await tx.auditLog.create({
+    data: buildAuditLogData(request, {
+      actorId,
+      action: 'ERP_SYNC_ENQUEUED',
+      targetType: 'purchase_request',
+      targetId: purchaseRequest.id,
+      extra: {
+        erpTarget: PROCUREMENT_ERP_TARGETS.commitmentJournal,
+        eventType: enqueued.eventType,
+        purchaseRequestId: purchaseRequest.id,
+        purchaseOrderArchiveId: null,
+        outboxId: enqueued.id,
+        duplicated: enqueued.duplicated,
+        requeued: enqueued.requeued,
+        gateReason: gate.reason,
+        featureFlag: FEATURE_FLAG_KEYS.erpSync,
+        departmentId,
+      },
+    }),
+  });
+
+  return {
+    skipped: false,
+    gate,
+    purchaseRequest,
+    enqueued,
+  };
+}
+
 function parseTaskListQuery(query) {
   const parsed = TASK_LIST_QUERY_SCHEMA.safeParse(query ?? {});
   if (!parsed.success) {
@@ -1372,6 +1462,21 @@ async function workflowRoutes(fastify) {
             actorId: request.employee.id,
             note: "approved_confirm_purchase_budget",
           });
+
+          try {
+            await handlePurchaseApprovalErpSync({
+              tx,
+              config: fastify.config,
+              request,
+              actorId: request.employee.id,
+              purchaseRequestId: workflowInstance.entity_id,
+            });
+          } catch (error) {
+            fastify.log.error(
+              { err: error, purchaseRequestId: workflowInstance.entity_id },
+              "Failed to enqueue purchase approval ERP events",
+            );
+          }
         }
 
         await tx.workflowHistory.create({
@@ -1905,5 +2010,6 @@ async function workflowRoutes(fastify) {
 module.exports = workflowRoutes;
 
 module.exports.__testables = {
+  handlePurchaseApprovalErpSync,
   listAllowedActionsForTask,
 };
diff --git a/server/src/services/integrations/dispatcher.js b/server/src/services/integrations/dispatcher.js
index c3c11ee4..14c54041 100644
--- a/server/src/services/integrations/dispatcher.js
+++ b/server/src/services/integrations/dispatcher.js
@@ -1,4 +1,8 @@
-const { pushPaidReimbursementToErp, exportJournalToErp } = require('./erp');
+const {
+  pushPaidReimbursementToErp,
+  exportJournalToErp,
+  exportProcurementToErp,
+} = require('./erp');
 const { sendInstantMessageByChannel } = require('../notifications/channels');
 
 class IntegrationDispatchError extends Error {
@@ -22,71 +26,168 @@ function toDispatchError(result) {
   });
 }
 
-function extractExternalId(response) {
-  if (!response) {
+function extractResponseValue(response, key) {
+  if (!response || !key) {
     return null;
   }
 
-  if (typeof response.externalId === 'string' && response.externalId.trim()) {
-    return response.externalId.trim();
+  const directValue = response[key];
+  if (typeof directValue === 'string' && directValue.trim()) {
+    return directValue.trim();
   }
 
-  if (
-    typeof response.body?.externalId === 'string' &&
-    response.body.externalId.trim()
-  ) {
-    return response.body.externalId.trim();
+  const bodyValue = response.body?.[key];
+  if (typeof bodyValue === 'string' && bodyValue.trim()) {
+    return bodyValue.trim();
   }
 
   return null;
 }
 
-async function upsertErpBindingForPayload(prisma, payload, response) {
-  const entityType = String(payload?.entityType ?? '').trim();
-  const entityId = String(payload?.entityId ?? '').trim();
-  if (!prisma || !entityType || !entityId) {
+function createBindingSpec(entityType, localId, externalId, externalCode) {
+  const normalizedEntityType = String(entityType ?? '').trim();
+  const normalizedLocalId = String(localId ?? '').trim();
+  if (!normalizedEntityType || !normalizedLocalId) {
+    return null;
+  }
+
+  return {
+    entityType: normalizedEntityType,
+    localId: normalizedLocalId,
+    externalId: typeof externalId === 'string' ? externalId.trim() || null : null,
+    externalCode: typeof externalCode === 'string' ? externalCode.trim() || null : null,
+  };
+}
+
+function resolveBindingSpecs(eventType, payload, response) {
+  if (eventType === 'erp.reimbursement.paid') {
+    return [
+      createBindingSpec(
+        'reimbursement_journal',
+        payload?.reimbursementId ?? payload?.entityId,
+        extractResponseValue(response, 'externalId'),
+        payload?.formNumber ?? payload?.documentNo ?? null,
+      ),
+    ].filter(Boolean);
+  }
+
+  if (eventType === 'erp.journal.export') {
+    const journalType = String(payload?.journalType ?? '').trim();
+    if (journalType === 'reimbursement_paid') {
+      return [
+        createBindingSpec(
+          'reimbursement_journal',
+          payload?.entityId,
+          extractResponseValue(response, 'externalId'),
+          payload?.documentNo ?? payload?.formNumber ?? null,
+        ),
+      ].filter(Boolean);
+    }
+
+    if (journalType === 'purchase_request_commitment') {
+      return [
+        createBindingSpec(
+          'purchase_request_commitment_journal',
+          payload?.references?.purchaseRequestId ?? payload?.entityId,
+          extractResponseValue(response, 'externalId'),
+          extractResponseValue(response, 'externalCode') ?? payload?.references?.requestNo ?? payload?.documentNo ?? null,
+        ),
+      ].filter(Boolean);
+    }
+
+    if (journalType === 'purchase_order_accrual') {
+      return [
+        createBindingSpec(
+          'purchase_order_accrual_journal',
+          payload?.references?.purchaseOrderArchiveId ?? payload?.entityId,
+          extractResponseValue(response, 'externalId'),
+          extractResponseValue(response, 'externalCode') ?? payload?.references?.poNo ?? payload?.documentNo ?? null,
+        ),
+      ].filter(Boolean);
+    }
+  }
+
+  if (eventType === 'erp.procurement.export') {
+    const archiveId = payload?.entityId;
+    const specs = [];
+
+    if (archiveId && (payload?.poNo || extractResponseValue(response, 'externalPoId') || extractResponseValue(response, 'externalPoNo'))) {
+      specs.push(
+        createBindingSpec(
+          'purchase_order_po',
+          archiveId,
+          extractResponseValue(response, 'externalPoId'),
+          extractResponseValue(response, 'externalPoNo') ?? payload?.poNo ?? null,
+        ),
+      );
+    }
+
+    if (archiveId && (payload?.contractNo || extractResponseValue(response, 'externalContractId') || extractResponseValue(response, 'externalContractNo'))) {
+      specs.push(
+        createBindingSpec(
+          'purchase_order_contract',
+          archiveId,
+          extractResponseValue(response, 'externalContractId'),
+          extractResponseValue(response, 'externalContractNo') ?? payload?.contractNo ?? null,
+        ),
+      );
+    }
+
+    return specs.filter(Boolean);
+  }
+
+  return [];
+}
+
+async function upsertErpBindings(prisma, eventType, payload, response) {
+  if (!prisma) {
     return;
   }
 
-  if (entityType !== 'reimbursement_form') {
+  const specs = resolveBindingSpecs(eventType, payload, response);
+  if (!specs.length) {
     return;
   }
 
-  await prisma.integrationBinding.upsert({
-    where: {
-      provider_entity_type_local_id: {
-        provider: 'erp',
-        entity_type: 'reimbursement_journal',
-        local_id: entityId,
+  for (const spec of specs) {
+    await prisma.integrationBinding.upsert({
+      where: {
+        provider_entity_type_local_id: {
+          provider: 'erp',
+          entity_type: spec.entityType,
+          local_id: spec.localId,
+        },
       },
-    },
-    create: {
-      provider: 'erp',
-      entity_type: 'reimbursement_journal',
-      local_id: entityId,
-      external_id: extractExternalId(response),
-      external_code: payload?.documentNo ?? payload?.formNumber ?? null,
-      last_synced_at: new Date(),
-    },
-    update: {
-      external_id: extractExternalId(response),
-      external_code: payload?.documentNo ?? payload?.formNumber ?? null,
-      last_synced_at: new Date(),
-    },
-  });
+      create: {
+        provider: 'erp',
+        entity_type: spec.entityType,
+        local_id: spec.localId,
+        external_id: spec.externalId,
+        external_code: spec.externalCode,
+        last_synced_at: new Date(),
+      },
+      update: {
+        external_id: spec.externalId,
+        external_code: spec.externalCode,
+        last_synced_at: new Date(),
+      },
+    });
+  }
 }
 
 async function dispatchErpEvent({ prisma, config, eventType, payload }) {
   const result =
-    eventType === 'erp.journal.export'
-      ? await exportJournalToErp(config, payload)
-      : await pushPaidReimbursementToErp(config, payload);
+    eventType === 'erp.procurement.export'
+      ? await exportProcurementToErp(config, payload)
+      : eventType === 'erp.journal.export'
+        ? await exportJournalToErp(config, payload)
+        : await pushPaidReimbursementToErp(config, payload);
 
   if (!result.ok) {
     throw toDispatchError(result);
   }
 
-  await upsertErpBindingForPayload(prisma, payload, result.response ?? null);
+  await upsertErpBindings(prisma, eventType, payload, result.response ?? null);
 
   return {
     channel: 'erp',
@@ -96,7 +197,11 @@ async function dispatchErpEvent({ prisma, config, eventType, payload }) {
 }
 
 async function dispatchOutboxEvent({ prisma, config, eventType, payload }) {
-  if (eventType === 'erp.reimbursement.paid' || eventType === 'erp.journal.export') {
+  if (
+    eventType === 'erp.reimbursement.paid' ||
+    eventType === 'erp.journal.export' ||
+    eventType === 'erp.procurement.export'
+  ) {
     return dispatchErpEvent({ prisma, config, eventType, payload });
   }
 
diff --git a/server/src/services/integrations/erp.js b/server/src/services/integrations/erp.js
index d13d6276..d93c320c 100644
--- a/server/src/services/integrations/erp.js
+++ b/server/src/services/integrations/erp.js
@@ -34,6 +34,13 @@ function resolveJournalExportEndpoint(config) {
   );
 }
 
+function resolveProcurementExportEndpoint(config) {
+  return (
+    String(config.erpProcurementExportEndpoint ?? '').trim() ||
+    String(config.erpSyncEndpoint ?? '').trim()
+  );
+}
+
 async function parseResponseBody(response) {
   const contentType = response.headers.get('content-type') || '';
   if (contentType.includes('application/json')) {
@@ -192,12 +199,14 @@ async function exportJournalToErp(config, payload) {
 
   const provider = normalizeProvider(config);
   if (provider === 'mock') {
+    const identity = payload?.documentNo ?? payload?.formNumber ?? payload?.entityId ?? payload?.reimbursementId ?? 'UNKNOWN';
     return {
       ok: true,
       code: 'mock_synced',
       message: 'mock ERP synced',
       response: {
-        externalId: `ERP-${payload?.documentNo ?? payload?.formNumber ?? payload?.entityId ?? payload?.reimbursementId ?? 'UNKNOWN'}`,
+        externalId: `ERP-${identity}`,
+        externalCode: `ERP-${identity}`,
       },
     };
   }
@@ -227,6 +236,59 @@ async function exportJournalToErp(config, payload) {
   };
 }
 
+async function exportProcurementToErp(config, payload) {
+  if (!config.erpSyncEnabled) {
+    return {
+      ok: false,
+      code: 'erp_sync_disabled',
+      message: 'ERP sync disabled',
+      retryable: false,
+    };
+  }
+
+  const provider = normalizeProvider(config);
+  if (provider === 'mock') {
+    const identity = payload?.poNo ?? payload?.contractNo ?? payload?.entityId ?? 'UNKNOWN';
+    return {
+      ok: true,
+      code: 'mock_synced',
+      message: 'mock ERP procurement synced',
+      response: {
+        externalId: `ERP-PROC-${identity}`,
+        externalCode: `ERP-PROC-${identity}`,
+        externalPoId: payload?.poNo ? `ERP-PO-${payload.poNo}` : null,
+        externalPoNo: payload?.poNo ? `ERP-PO-${payload.poNo}` : null,
+        externalContractId: payload?.contractNo ? `ERP-CT-${payload.contractNo}` : null,
+        externalContractNo: payload?.contractNo ? `ERP-CT-${payload.contractNo}` : null,
+      },
+    };
+  }
+
+  if (provider === 'http') {
+    return postJsonToErp(config, {
+      endpoint: resolveProcurementExportEndpoint(config),
+      timeoutMs: coerceTimeout(config.erpProcurementTimeoutMs, config.erpSyncTimeoutMs),
+      payload,
+      successCode: 'http_synced',
+      successMessage: 'ERP procurement synced',
+      missingEndpointCode: 'erp_procurement_endpoint_missing',
+      missingEndpointMessage: 'ERP procurement endpoint missing',
+      http4xxCode: 'erp_procurement_http_4xx',
+      http5xxCode: 'erp_procurement_http_5xx',
+      timeoutCode: 'erp_procurement_timeout',
+      networkCode: 'erp_procurement_network_error',
+      messagePrefix: 'ERP procurement sync',
+    });
+  }
+
+  return {
+    ok: false,
+    code: 'erp_sync_provider_invalid',
+    message: `Unsupported ERP sync provider: ${provider}`,
+    retryable: false,
+  };
+}
+
 function buildErpPayload(input) {
   return buildReimbursementJournalPayload(input);
 }
@@ -238,6 +300,7 @@ async function pushPaidReimbursementToErp(config, payload) {
 module.exports = {
   buildErpPayload,
   exportJournalToErp,
+  exportProcurementToErp,
   normalizeProvider,
   pullMasterDataFromErp,
   pushPaidReimbursementToErp,
diff --git a/server/src/services/integrations/erpProcurement.js b/server/src/services/integrations/erpProcurement.js
new file mode 100644
index 00000000..15ca0244
--- /dev/null
+++ b/server/src/services/integrations/erpProcurement.js
@@ -0,0 +1,704 @@
+const crypto = require('node:crypto');
+
+const { enqueueIntegrationEvent } = require('./outbox');
+
+const PROCUREMENT_TRACK_STATUSES = Object.freeze({
+  notTriggered: 'not_triggered',
+  skipped: 'skipped',
+});
+
+const PROCUREMENT_ERP_TARGETS = Object.freeze({
+  commitmentJournal: 'commitment_journal',
+  accrualJournal: 'accrual_journal',
+  archiveSummary: 'archive_summary',
+});
+
+function normalizeString(value) {
+  const text = String(value ?? '').trim();
+  return text || null;
+}
+
+function toIsoString(value) {
+  if (!value) {
+    return null;
+  }
+
+  try {
+    return new Date(value).toISOString();
+  } catch {
+    return null;
+  }
+}
+
+function normalizeMoney(value) {
+  if (value == null) {
+    return '0.00';
+  }
+
+  if (typeof value === 'string') {
+    const trimmed = value.trim();
+    return trimmed || '0.00';
+  }
+
+  if (typeof value?.toString === 'function') {
+    return value.toString();
+  }
+
+  return '0.00';
+}
+
+function resolveCurrencyCode(purchaseRequest) {
+  return normalizeString(purchaseRequest?.currency_code) ?? 'CNY';
+}
+
+function resolveLegalEntityCode(purchaseRequest) {
+  return normalizeString(purchaseRequest?.legal_entity?.code);
+}
+
+function resolveCostCenterCode(purchaseRequest) {
+  return normalizeString(purchaseRequest?.cost_center?.code);
+}
+
+function resolveSupplierCode(purchaseRequest) {
+  return normalizeString(purchaseRequest?.supplier?.code);
+}
+
+function resolveBudgetPoolCode(purchaseRequest) {
+  return normalizeString(purchaseRequest?.budget_pool?.code);
+}
+
+function resolveDocumentCategoryCode(purchaseRequest) {
+  return normalizeString(purchaseRequest?.document_category?.code);
+}
+
+function stableNormalizeJson(value) {
+  if (Array.isArray(value)) {
+    return value.map((item) => stableNormalizeJson(item));
+  }
+
+  if (value && typeof value === 'object' && value.constructor === Object) {
+    return Object.keys(value)
+      .sort()
+      .reduce((result, key) => {
+        result[key] = stableNormalizeJson(value[key]);
+        return result;
+      }, {});
+  }
+
+  return value;
+}
+
+function stableStringifyJson(value) {
+  return JSON.stringify(stableNormalizeJson(value));
+}
+
+function hashProcurementPayload(value) {
+  return crypto.createHash('sha256').update(stableStringifyJson(value)).digest('hex');
+}
+
+function buildPurchaseCommitmentJournalPayload(input) {
+  const purchaseRequest = input?.purchaseRequest ?? {};
+
+  return {
+    journalType: 'purchase_request_commitment',
+    sourceEventName: 'purchase_request.approved',
+    entityType: 'purchase_request',
+    entityId: purchaseRequest.id ?? null,
+    documentNo: purchaseRequest.request_no ?? null,
+    currencyCode: resolveCurrencyCode(purchaseRequest),
+    totalAmount: normalizeMoney(purchaseRequest.total_amount),
+    occurredAt:
+      toIsoString(input?.occurredAt) ??
+      toIsoString(purchaseRequest.updated_at) ??
+      toIsoString(purchaseRequest.created_at),
+    dimensions: {
+      departmentId: purchaseRequest.department_id ?? null,
+      applicantEmployeeId: purchaseRequest.applicant_id ?? null,
+      submitterEmployeeId: purchaseRequest.submitter_id ?? null,
+      legalEntityCode: resolveLegalEntityCode(purchaseRequest),
+      costCenterCode: resolveCostCenterCode(purchaseRequest),
+      supplierCode: resolveSupplierCode(purchaseRequest),
+      budgetPoolCode: resolveBudgetPoolCode(purchaseRequest),
+    },
+    references: {
+      purchaseRequestId: purchaseRequest.id ?? null,
+      documentCategoryCode: resolveDocumentCategoryCode(purchaseRequest),
+      requestNo: purchaseRequest.request_no ?? null,
+    },
+  };
+}
+
+function buildPurchaseAccrualJournalPayload(input) {
+  const purchaseRequest = input?.purchaseRequest ?? {};
+  const archive = input?.archive ?? purchaseRequest.order_archive ?? {};
+
+  return {
+    journalType: 'purchase_order_accrual',
+    sourceEventName: 'purchase_order.archived',
+    entityType: 'purchase_order_archive',
+    entityId: archive.id ?? null,
+    documentNo: archive.po_no ?? null,
+    currencyCode: resolveCurrencyCode(purchaseRequest),
+    totalAmount: normalizeMoney(purchaseRequest.total_amount),
+    occurredAt:
+      toIsoString(input?.occurredAt) ??
+      toIsoString(archive.archived_at) ??
+      toIsoString(purchaseRequest.updated_at) ??
+      toIsoString(purchaseRequest.created_at),
+    dimensions: {
+      departmentId: purchaseRequest.department_id ?? null,
+      applicantEmployeeId: purchaseRequest.applicant_id ?? null,
+      submitterEmployeeId: purchaseRequest.submitter_id ?? null,
+      legalEntityCode: resolveLegalEntityCode(purchaseRequest),
+      costCenterCode: resolveCostCenterCode(purchaseRequest),
+      supplierCode: resolveSupplierCode(purchaseRequest),
+      budgetPoolCode: resolveBudgetPoolCode(purchaseRequest),
+    },
+    references: {
+      purchaseRequestId: purchaseRequest.id ?? null,
+      purchaseOrderArchiveId: archive.id ?? null,
+      requestNo: purchaseRequest.request_no ?? null,
+      poNo: archive.po_no ?? null,
+      contractNo: archive.contract_no ?? null,
+    },
+  };
+}
+
+function buildPurchaseArchiveSummaryPayload(input) {
+  const purchaseRequest = input?.purchaseRequest ?? {};
+  const archive = input?.archive ?? purchaseRequest.order_archive ?? {};
+  const archivedFiles = Array.isArray(archive.archived_files)
+    ? archive.archived_files.map((file) => ({
+        storagePath: file?.storagePath ?? null,
+        originalName: file?.originalName ?? null,
+        mimeType: file?.mimeType ?? null,
+        fileSize: Number(file?.fileSize ?? 0),
+      }))
+    : [];
+
+  return {
+    exportType: 'purchase_order_archive',
+    sourceEventName: 'purchase_order.archived',
+    entityType: 'purchase_order_archive',
+    entityId: archive.id ?? null,
+    purchaseRequestId: purchaseRequest.id ?? null,
+    requestNo: purchaseRequest.request_no ?? null,
+    poNo: archive.po_no ?? null,
+    contractNo: archive.contract_no ?? null,
+    currencyCode: resolveCurrencyCode(purchaseRequest),
+    totalAmount: normalizeMoney(purchaseRequest.total_amount),
+    archivedAt:
+      toIsoString(input?.archivedAt) ??
+      toIsoString(archive.archived_at) ??
+      toIsoString(purchaseRequest.updated_at) ??
+      toIsoString(purchaseRequest.created_at),
+    supplier: purchaseRequest.supplier
+      ? {
+          id: purchaseRequest.supplier.id,
+          code: purchaseRequest.supplier.code ?? null,
+          name: purchaseRequest.supplier.name ?? null,
+        }
+      : {
+          id: purchaseRequest.supplier_id ?? null,
+          code: null,
+          name: null,
+        },
+    dimensions: {
+      legalEntityCode: resolveLegalEntityCode(purchaseRequest),
+      costCenterCode: resolveCostCenterCode(purchaseRequest),
+      departmentId: purchaseRequest.department_id ?? null,
+    },
+    files: archivedFiles,
+  };
+}
+
+function buildPurchaseCommitmentJournalDedupeKey(purchaseRequestId) {
+  return `purchase_request:${purchaseRequestId}:commitment`;
+}
+
+function buildPurchaseAccrualJournalDedupeKey(archiveId) {
+  return `purchase_order_archive:${archiveId}:accrual`;
+}
+
+function buildPurchaseArchiveSummaryDedupeKey(archiveId) {
+  return `purchase_order_archive:${archiveId}:summary`;
+}
+
+function mapIntegrationBinding(record) {
+  if (!record) {
+    return null;
+  }
+
+  return {
+    id: record.id,
+    provider: record.provider,
+    entityType: record.entity_type,
+    localId: record.local_id,
+    externalId: record.external_id ?? null,
+    externalCode: record.external_code ?? null,
+    lastSyncedAt: record.last_synced_at?.toISOString?.() ?? null,
+  };
+}
+
+function redactBinding(binding, canManage) {
+  if (!binding) {
+    return null;
+  }
+
+  if (canManage) {
+    return binding;
+  }
+
+  return {
+    ...binding,
+    externalId: null,
+    externalCode: null,
+  };
+}
+
+function mapIntegrationOutboxState(record) {
+  if (!record) {
+    return null;
+  }
+
+  return {
+    id: record.id,
+    eventType: record.event_type,
+    status: record.status,
+    attempts: Number(record.attempts ?? 0),
+    lastError: record.last_error ?? null,
+    processedAt: record.processed_at?.toISOString?.() ?? null,
+    updatedAt: record.updated_at?.toISOString?.() ?? null,
+  };
+}
+
+async function findOutboxByKey(prisma, eventType, dedupeKey) {
+  if (!prisma || !eventType || !dedupeKey) {
+    return null;
+  }
+
+  return prisma.integrationOutbox.findUnique({
+    where: {
+      event_type_dedupe_key: {
+        event_type: eventType,
+        dedupe_key: dedupeKey,
+      },
+    },
+  });
+}
+
+async function findBindingByLocalId(prisma, entityType, localId) {
+  if (!prisma || !entityType || !localId) {
+    return null;
+  }
+
+  return prisma.integrationBinding.findUnique({
+    where: {
+      provider_entity_type_local_id: {
+        provider: 'erp',
+        entity_type: entityType,
+        local_id: localId,
+      },
+    },
+  });
+}
+
+async function enqueuePurchaseCommitmentJournalExport(prisma, config, input) {
+  const payload =
+    input?.payload ??
+    buildPurchaseCommitmentJournalPayload({
+      purchaseRequest: input?.purchaseRequest,
+      occurredAt: input?.occurredAt,
+    });
+
+  const enqueued = await enqueueIntegrationEvent(prisma, {
+    eventType: 'erp.journal.export',
+    payload,
+    dedupeKey: buildPurchaseCommitmentJournalDedupeKey(payload.entityId),
+    maxAttempts: config.integrationOutboxMaxAttempts,
+    actorId: input?.actorId ?? null,
+    requeueOnFailure: input?.requeueOnFailure === true,
+  });
+
+  return {
+    ...enqueued,
+    eventType: 'erp.journal.export',
+    erpTarget: PROCUREMENT_ERP_TARGETS.commitmentJournal,
+    payload,
+  };
+}
+
+async function enqueuePurchaseAccrualJournalExport(prisma, config, input) {
+  const payload =
+    input?.payload ??
+    buildPurchaseAccrualJournalPayload({
+      purchaseRequest: input?.purchaseRequest,
+      archive: input?.archive,
+      occurredAt: input?.occurredAt,
+    });
+
+  const enqueued = await enqueueIntegrationEvent(prisma, {
+    eventType: 'erp.journal.export',
+    payload,
+    dedupeKey: buildPurchaseAccrualJournalDedupeKey(payload.entityId),
+    maxAttempts: config.integrationOutboxMaxAttempts,
+    actorId: input?.actorId ?? null,
+    requeueOnFailure: input?.requeueOnFailure === true,
+  });
+
+  return {
+    ...enqueued,
+    eventType: 'erp.journal.export',
+    erpTarget: PROCUREMENT_ERP_TARGETS.accrualJournal,
+    payload,
+  };
+}
+
+async function enqueuePurchaseArchiveSummaryExport(prisma, config, input) {
+  const payload =
+    input?.payload ??
+    buildPurchaseArchiveSummaryPayload({
+      purchaseRequest: input?.purchaseRequest,
+      archive: input?.archive,
+      archivedAt: input?.archivedAt,
+    });
+
+  const enqueued = await enqueueIntegrationEvent(prisma, {
+    eventType: 'erp.procurement.export',
+    payload,
+    dedupeKey: buildPurchaseArchiveSummaryDedupeKey(payload.entityId),
+    maxAttempts: config.integrationOutboxMaxAttempts,
+    actorId: input?.actorId ?? null,
+    requeueOnFailure: input?.requeueOnFailure === true,
+    resetOnPayloadChange: true,
+  });
+
+  return {
+    ...enqueued,
+    eventType: 'erp.procurement.export',
+    erpTarget: PROCUREMENT_ERP_TARGETS.archiveSummary,
+    payload,
+  };
+}
+
+async function loadPurchaseRequestErpContext(prisma, purchaseRequestId) {
+  const purchaseRequest = await prisma.purchaseRequest.findUnique({
+    where: { id: purchaseRequestId },
+    select: {
+      id: true,
+      request_no: true,
+      applicant_id: true,
+      submitter_id: true,
+      department_id: true,
+      legal_entity_id: true,
+      cost_center_id: true,
+      supplier_id: true,
+      document_category_id: true,
+      budget_pool_id: true,
+      status: true,
+      currency_code: true,
+      total_amount: true,
+      created_at: true,
+      updated_at: true,
+      applicant: {
+        select: {
+          id: true,
+          employee_no: true,
+          name: true,
+        },
+      },
+      submitter: {
+        select: {
+          id: true,
+          employee_no: true,
+          name: true,
+        },
+      },
+      legal_entity: {
+        select: {
+          id: true,
+          code: true,
+          name: true,
+        },
+      },
+      cost_center: {
+        select: {
+          id: true,
+          code: true,
+          name: true,
+        },
+      },
+      supplier: {
+        select: {
+          id: true,
+          code: true,
+          name: true,
+        },
+      },
+      document_category: {
+        select: {
+          id: true,
+          code: true,
+          name: true,
+        },
+      },
+      budget_pool: {
+        select: {
+          id: true,
+          code: true,
+          name: true,
+        },
+      },
+      order_archive: {
+        select: {
+          id: true,
+          po_no: true,
+          contract_no: true,
+          archived_files: true,
+          archived_at: true,
+          archived_by: true,
+        },
+      },
+      workflow_instances: {
+        where: { entity_type: 'purchase_request' },
+        orderBy: { created_at: 'desc' },
+        take: 1,
+        select: { id: true },
+      },
+    },
+  });
+
+  if (!purchaseRequest) {
+    return null;
+  }
+
+  const workflowInstanceId = purchaseRequest.workflow_instances?.[0]?.id ?? null;
+  const approvalHistory = workflowInstanceId
+    ? await prisma.workflowHistory.findFirst({
+        where: {
+          instance_id: workflowInstanceId,
+          action: 'approve',
+        },
+        orderBy: { created_at: 'desc' },
+        select: { created_at: true },
+      })
+    : null;
+
+  return {
+    purchaseRequest,
+    approvalOccurredAt:
+      approvalHistory?.created_at ?? purchaseRequest.updated_at ?? purchaseRequest.created_at ?? null,
+  };
+}
+
+function hasAnyBinding(binding) {
+  if (!binding) {
+    return false;
+  }
+
+  return Boolean(binding.externalId || binding.externalCode || binding.lastSyncedAt);
+}
+
+function resolveTrackStageStatus({ eligible, outbox, binding, bindings, gateEnabled }) {
+  if (outbox?.status) {
+    return outbox.status;
+  }
+
+  if (binding && hasAnyBinding(binding)) {
+    return 'succeeded';
+  }
+
+  if (bindings && Object.values(bindings).some((item) => hasAnyBinding(item))) {
+    return 'succeeded';
+  }
+
+  if (!eligible) {
+    return PROCUREMENT_TRACK_STATUSES.notTriggered;
+  }
+
+  if (!gateEnabled) {
+    return PROCUREMENT_TRACK_STATUSES.skipped;
+  }
+
+  return PROCUREMENT_TRACK_STATUSES.notTriggered;
+}
+
+function buildPurchaseTrackSummary(context) {
+  const purchaseRequest = context?.purchaseRequest ?? {};
+  const archive = purchaseRequest.order_archive ?? null;
+
+  return {
+    id: purchaseRequest.id,
+    requestNo: purchaseRequest.request_no ?? null,
+    status: purchaseRequest.status,
+    totalAmount: normalizeMoney(purchaseRequest.total_amount),
+    supplier: purchaseRequest.supplier
+      ? {
+          id: purchaseRequest.supplier.id,
+          code: purchaseRequest.supplier.code ?? null,
+          name: purchaseRequest.supplier.name ?? null,
+        }
+      : null,
+    archiveOrder: archive
+      ? {
+          id: archive.id,
+          poNo: archive.po_no,
+          contractNo: archive.contract_no ?? null,
+          archivedAt: toIsoString(archive.archived_at),
+        }
+      : null,
+  };
+}
+
+async function buildPurchaseRequestErpTrack(prisma, config, purchaseRequestId, options = {}) {
+  const context = options.context ?? (await loadPurchaseRequestErpContext(prisma, purchaseRequestId));
+  if (!context) {
+    return null;
+  }
+
+  const purchaseRequest = context.purchaseRequest;
+  const archive = purchaseRequest.order_archive ?? null;
+  const canManage = Boolean(options.canManage);
+  const gateEnabled = Boolean(options.gate?.effectiveEnabled ?? options.gate?.enabled ?? true);
+
+  const [
+    commitmentOutboxRow,
+    accrualOutboxRow,
+    summaryOutboxRow,
+    commitmentBindingRow,
+    accrualBindingRow,
+    poBindingRow,
+    contractBindingRow,
+  ] = await Promise.all([
+    findOutboxByKey(
+      prisma,
+      'erp.journal.export',
+      buildPurchaseCommitmentJournalDedupeKey(purchaseRequest.id),
+    ),
+    archive
+      ? findOutboxByKey(
+          prisma,
+          'erp.journal.export',
+          buildPurchaseAccrualJournalDedupeKey(archive.id),
+        )
+      : Promise.resolve(null),
+    archive
+      ? findOutboxByKey(
+          prisma,
+          'erp.procurement.export',
+          buildPurchaseArchiveSummaryDedupeKey(archive.id),
+        )
+      : Promise.resolve(null),
+    findBindingByLocalId(prisma, 'purchase_request_commitment_journal', purchaseRequest.id),
+    archive
+      ? findBindingByLocalId(prisma, 'purchase_order_accrual_journal', archive.id)
+      : Promise.resolve(null),
+    archive ? findBindingByLocalId(prisma, 'purchase_order_po', archive.id) : Promise.resolve(null),
+    archive
+      ? findBindingByLocalId(prisma, 'purchase_order_contract', archive.id)
+      : Promise.resolve(null),
+  ]);
+
+  const commitmentPreview = buildPurchaseCommitmentJournalPayload({
+    purchaseRequest,
+    occurredAt: context.approvalOccurredAt,
+  });
+  const accrualPreview = archive
+    ? buildPurchaseAccrualJournalPayload({
+        purchaseRequest,
+        archive,
+        occurredAt: archive.archived_at,
+      })
+    : {};
+  const summaryPreview = archive
+    ? buildPurchaseArchiveSummaryPayload({
+        purchaseRequest,
+        archive,
+        archivedAt: archive.archived_at,
+      })
+    : {};
+
+  const commitmentBinding = redactBinding(mapIntegrationBinding(commitmentBindingRow), canManage);
+  const accrualBinding = redactBinding(mapIntegrationBinding(accrualBindingRow), canManage);
+  const poBinding = redactBinding(mapIntegrationBinding(poBindingRow), canManage);
+  const contractBinding = redactBinding(mapIntegrationBinding(contractBindingRow), canManage);
+
+  const commitmentOutbox = mapIntegrationOutboxState(commitmentOutboxRow);
+  const accrualOutbox = mapIntegrationOutboxState(accrualOutboxRow);
+  const summaryOutbox = mapIntegrationOutboxState(summaryOutboxRow);
+
+  const commitmentEligible = purchaseRequest.status === 'approved';
+  const archiveEligible = Boolean(archive);
+
+  return {
+    purchaseRequest: buildPurchaseTrackSummary(context),
+    stages: {
+      commitmentJournal: {
+        eligible: commitmentEligible,
+        reason: commitmentEligible ? null : 'purchase_request_not_approved',
+        status: resolveTrackStageStatus({
+          eligible: commitmentEligible,
+          outbox: commitmentOutbox,
+          binding: commitmentBinding,
+          gateEnabled,
+        }),
+        preview: commitmentPreview,
+        outbox: commitmentOutbox,
+        binding: commitmentBinding,
+      },
+      accrualJournal: {
+        eligible: archiveEligible,
+        reason: archiveEligible ? null : 'purchase_order_archive_missing',
+        status: resolveTrackStageStatus({
+          eligible: archiveEligible,
+          outbox: accrualOutbox,
+          binding: accrualBinding,
+          gateEnabled,
+        }),
+        preview: accrualPreview,
+        outbox: accrualOutbox,
+        binding: accrualBinding,
+      },
+      archiveSummary: {
+        eligible: archiveEligible,
+        reason: archiveEligible ? null : 'purchase_order_archive_missing',
+        status: resolveTrackStageStatus({
+          eligible: archiveEligible,
+          outbox: summaryOutbox,
+          bindings: {
+            po: poBinding,
+            contract: contractBinding,
+          },
+          gateEnabled,
+        }),
+        preview: summaryPreview,
+        outbox: summaryOutbox,
+        bindings: {
+          po: poBinding,
+          contract: contractBinding,
+        },
+      },
+    },
+    permissions: {
+      canRetry: Boolean(canManage && gateEnabled),
+    },
+  };
+}
+
+module.exports = {
+  PROCUREMENT_ERP_TARGETS,
+  PROCUREMENT_TRACK_STATUSES,
+  buildPurchaseAccrualJournalDedupeKey,
+  buildPurchaseAccrualJournalPayload,
+  buildPurchaseArchiveSummaryDedupeKey,
+  buildPurchaseArchiveSummaryPayload,
+  buildPurchaseCommitmentJournalDedupeKey,
+  buildPurchaseCommitmentJournalPayload,
+  buildPurchaseRequestErpTrack,
+  enqueuePurchaseAccrualJournalExport,
+  enqueuePurchaseArchiveSummaryExport,
+  enqueuePurchaseCommitmentJournalExport,
+  hashProcurementPayload,
+  loadPurchaseRequestErpContext,
+  stableStringifyJson,
+};
diff --git a/server/src/services/integrations/outbox.js b/server/src/services/integrations/outbox.js
index f7e302d4..38c4a019 100644
--- a/server/src/services/integrations/outbox.js
+++ b/server/src/services/integrations/outbox.js
@@ -35,6 +35,55 @@ function formatDispatchError(error) {
   return parts.join(' | ');
 }
 
+function stableNormalizeJson(value) {
+  if (Array.isArray(value)) {
+    return value.map((item) => stableNormalizeJson(item));
+  }
+
+  if (value && typeof value === 'object' && value.constructor === Object) {
+    return Object.keys(value)
+      .sort()
+      .reduce((result, key) => {
+        result[key] = stableNormalizeJson(value[key]);
+        return result;
+      }, {});
+  }
+
+  return value;
+}
+
+function hasIntegrationPayloadChanged(currentPayload, nextPayload) {
+  return JSON.stringify(stableNormalizeJson(currentPayload)) !== JSON.stringify(stableNormalizeJson(nextPayload));
+}
+
+async function resetExistingOutbox(prisma, existed, input) {
+  const reset = await prisma.integrationOutbox.update({
+    where: { id: existed.id },
+    data: {
+      status: OUTBOX_STATUSES.pending,
+      payload: input.payload,
+      attempts: 0,
+      max_attempts: input.maxAttempts,
+      last_error: null,
+      next_retry_at: null,
+      processed_at: null,
+      dead_letter_at: null,
+      updated_by: input.actorId ?? null,
+    },
+    select: {
+      id: true,
+      status: true,
+    },
+  });
+
+  return {
+    id: reset.id,
+    status: reset.status,
+    duplicated: false,
+    requeued: true,
+  };
+}
+
 async function enqueueIntegrationEvent(prisma, input) {
   const dedupeKey = input.dedupeKey ?? null;
 
@@ -47,40 +96,23 @@ async function enqueueIntegrationEvent(prisma, input) {
               dedupe_key: dedupeKey,
             },
           },
-          select: { id: true, status: true },
+          select: { id: true, status: true, payload: true },
         })
       : null;
 
   if (existed) {
+    if (
+      input.resetOnPayloadChange &&
+      hasIntegrationPayloadChanged(existed.payload, input.payload)
+    ) {
+      return resetExistingOutbox(prisma, existed, input);
+    }
+
     if (
       input.requeueOnFailure &&
       [OUTBOX_STATUSES.failed, OUTBOX_STATUSES.dead_letter].includes(existed.status)
     ) {
-      const reset = await prisma.integrationOutbox.update({
-        where: { id: existed.id },
-        data: {
-          status: OUTBOX_STATUSES.pending,
-          payload: input.payload,
-          attempts: 0,
-          max_attempts: input.maxAttempts,
-          last_error: null,
-          next_retry_at: null,
-          processed_at: null,
-          dead_letter_at: null,
-          updated_by: input.actorId ?? null,
-        },
-        select: {
-          id: true,
-          status: true,
-        },
-      });
-
-      return {
-        id: reset.id,
-        status: reset.status,
-        duplicated: false,
-        requeued: true,
-      };
+      return resetExistingOutbox(prisma, existed, input);
     }
 
     return {
@@ -188,6 +220,7 @@ module.exports = {
   OUTBOX_STATUSES,
   enqueueIntegrationEvent,
   fetchPendingOutboxEvents,
+  hasIntegrationPayloadChanged,
   markOutboxProcessing,
   markOutboxSucceeded,
   markOutboxFailed,
diff --git a/server/tests/unit/integrations.dispatcher.test.js b/server/tests/unit/integrations.dispatcher.test.js
index 3ecf8d05..7a37ca7c 100644
--- a/server/tests/unit/integrations.dispatcher.test.js
+++ b/server/tests/unit/integrations.dispatcher.test.js
@@ -1,9 +1,9 @@
 const {
   IntegrationDispatchError,
   dispatchOutboxEvent,
-} = require("../../src/services/integrations/dispatcher");
+} = require('../../src/services/integrations/dispatcher');
 
-describe("dispatchOutboxEvent", () => {
+describe('dispatchOutboxEvent', () => {
   const originalFetch = global.fetch;
 
   afterEach(() => {
@@ -11,25 +11,25 @@ describe("dispatchOutboxEvent", () => {
     vi.restoreAllMocks();
   });
 
-  it("handles mock ERP success", async () => {
+  it('handles mock ERP success', async () => {
     const result = await dispatchOutboxEvent({
       config: {
         erpSyncEnabled: true,
-        erpSyncProvider: "mock",
+        erpSyncProvider: 'mock',
       },
-      eventType: "erp.reimbursement.paid",
+      eventType: 'erp.reimbursement.paid',
       payload: {
-        reimbursementId: "rb-1",
-        formNumber: "BX-001",
+        reimbursementId: 'rb-1',
+        formNumber: 'BX-001',
       },
     });
 
-    expect(result.channel).toBe("erp");
-    expect(result.code).toBe("mock_synced");
-    expect(result.response.externalId).toContain("BX-001");
+    expect(result.channel).toBe('erp');
+    expect(result.code).toBe('mock_synced');
+    expect(result.response.externalId).toContain('BX-001');
   });
 
-  it("records integration binding for standard journal export", async () => {
+  it('records integration binding for reimbursement journal export', async () => {
     const prisma = {
       integrationBinding: {
         upsert: vi.fn().mockResolvedValue({ id: 'binding-1' }),
@@ -44,6 +44,7 @@ describe("dispatchOutboxEvent", () => {
       },
       eventType: 'erp.journal.export',
       payload: {
+        journalType: 'reimbursement_paid',
         entityType: 'reimbursement_form',
         entityId: 'rb-1',
         documentNo: 'BX-20260308-0001',
@@ -64,23 +65,135 @@ describe("dispatchOutboxEvent", () => {
     );
   });
 
-  it("loads IM channel and dispatches mock wecom message", async () => {
+  it('records commitment binding for procurement journal export', async () => {
+    const prisma = {
+      integrationBinding: {
+        upsert: vi.fn().mockResolvedValue({ id: 'binding-1' }),
+      },
+    };
+
+    await dispatchOutboxEvent({
+      prisma,
+      config: { erpSyncEnabled: true, erpSyncProvider: 'mock' },
+      eventType: 'erp.journal.export',
+      payload: {
+        journalType: 'purchase_request_commitment',
+        entityType: 'purchase_request',
+        entityId: 'pr-1',
+        documentNo: 'PR-001',
+        references: { purchaseRequestId: 'pr-1', requestNo: 'PR-001' },
+      },
+    });
+
+    expect(prisma.integrationBinding.upsert).toHaveBeenCalledWith(
+      expect.objectContaining({
+        where: {
+          provider_entity_type_local_id: {
+            provider: 'erp',
+            entity_type: 'purchase_request_commitment_journal',
+            local_id: 'pr-1',
+          },
+        },
+      }),
+    );
+  });
+
+  it('records accrual binding for procurement journal export', async () => {
+    const prisma = {
+      integrationBinding: {
+        upsert: vi.fn().mockResolvedValue({ id: 'binding-1' }),
+      },
+    };
+
+    await dispatchOutboxEvent({
+      prisma,
+      config: { erpSyncEnabled: true, erpSyncProvider: 'mock' },
+      eventType: 'erp.journal.export',
+      payload: {
+        journalType: 'purchase_order_accrual',
+        entityType: 'purchase_order_archive',
+        entityId: 'archive-1',
+        documentNo: 'PO-001',
+        references: { purchaseOrderArchiveId: 'archive-1', poNo: 'PO-001' },
+      },
+    });
+
+    expect(prisma.integrationBinding.upsert).toHaveBeenCalledWith(
+      expect.objectContaining({
+        where: {
+          provider_entity_type_local_id: {
+            provider: 'erp',
+            entity_type: 'purchase_order_accrual_journal',
+            local_id: 'archive-1',
+          },
+        },
+      }),
+    );
+  });
+
+  it('records PO and contract bindings for procurement summary export', async () => {
+    const prisma = {
+      integrationBinding: {
+        upsert: vi.fn().mockResolvedValue({ id: 'binding-1' }),
+      },
+    };
+
+    await dispatchOutboxEvent({
+      prisma,
+      config: { erpSyncEnabled: true, erpSyncProvider: 'mock' },
+      eventType: 'erp.procurement.export',
+      payload: {
+        exportType: 'purchase_order_archive',
+        entityType: 'purchase_order_archive',
+        entityId: 'archive-1',
+        poNo: 'PO-001',
+        contractNo: 'CT-001',
+      },
+    });
+
+    expect(prisma.integrationBinding.upsert).toHaveBeenNthCalledWith(
+      1,
+      expect.objectContaining({
+        where: {
+          provider_entity_type_local_id: {
+            provider: 'erp',
+            entity_type: 'purchase_order_po',
+            local_id: 'archive-1',
+          },
+        },
+      }),
+    );
+    expect(prisma.integrationBinding.upsert).toHaveBeenNthCalledWith(
+      2,
+      expect.objectContaining({
+        where: {
+          provider_entity_type_local_id: {
+            provider: 'erp',
+            entity_type: 'purchase_order_contract',
+            local_id: 'archive-1',
+          },
+        },
+      }),
+    );
+  });
+
+  it('loads IM channel and dispatches mock wecom message', async () => {
     const prisma = {
       notificationChannel: {
         findUnique: vi.fn().mockResolvedValue({
-          id: "channel-1",
-          channel_type: "wecom",
-          name: "采购经理群",
+          id: 'channel-1',
+          channel_type: 'wecom',
+          name: '采购经理群',
           enabled: true,
           config_json: {
-            mode: "mock",
+            mode: 'mock',
             routing: {},
           },
           template_json: {
-            title: "{{title}}",
-            body: "{{body}}",
-            footer: "来自海音达工作台",
-            deepLinkLabel: "查看详情",
+            title: '{{title}}',
+            body: '{{body}}',
+            footer: '来自海音达工作台',
+            deepLinkLabel: '查看详情',
           },
         }),
       },
@@ -91,18 +204,18 @@ describe("dispatchOutboxEvent", () => {
       config: {
         imNotifierEnabled: true,
       },
-      eventType: "notification.im",
+      eventType: 'notification.im',
       payload: {
-        channelId: "channel-1",
-        channelType: "wecom",
-        notificationType: "workflow.task_assigned",
-        title: "【待办】采购申请待审批",
-        body: "采购申请已流转到你，请及时处理。",
+        channelId: 'channel-1',
+        channelType: 'wecom',
+        notificationType: 'workflow.task_assigned',
+        title: '【待办】采购申请待审批',
+        body: '采购申请已流转到你，请及时处理。',
       },
     });
 
     expect(prisma.notificationChannel.findUnique).toHaveBeenCalledWith({
-      where: { id: "channel-1" },
+      where: { id: 'channel-1' },
       select: {
         id: true,
         channel_type: true,
@@ -112,12 +225,12 @@ describe("dispatchOutboxEvent", () => {
         template_json: true,
       },
     });
-    expect(result.channel).toBe("im");
-    expect(result.code).toBe("mock_sent");
-    expect(result.previewMessage).toContain("采购申请待审批");
+    expect(result.channel).toBe('im');
+    expect(result.code).toBe('mock_sent');
+    expect(result.previewMessage).toContain('采购申请待审批');
   });
 
-  it("safely skips missing IM channel", async () => {
+  it('safely skips missing IM channel', async () => {
     const result = await dispatchOutboxEvent({
       prisma: {
         notificationChannel: {
@@ -127,28 +240,28 @@ describe("dispatchOutboxEvent", () => {
       config: {
         imNotifierEnabled: true,
       },
-      eventType: "notification.im",
+      eventType: 'notification.im',
       payload: {
-        channelId: "missing-channel",
-        channelType: "wecom",
+        channelId: 'missing-channel',
+        channelType: 'wecom',
       },
     });
 
-    expect(result.channel).toBe("im");
-    expect(result.code).toBe("channel_not_found");
+    expect(result.channel).toBe('im');
+    expect(result.code).toBe('channel_not_found');
     expect(result.skipped).toBe(true);
   });
 
-  it("safely skips disabled IM channel", async () => {
+  it('safely skips disabled IM channel', async () => {
     const result = await dispatchOutboxEvent({
       prisma: {
         notificationChannel: {
           findUnique: vi.fn().mockResolvedValue({
-            id: "channel-2",
-            channel_type: "wecom",
-            name: "disabled",
+            id: 'channel-2',
+            channel_type: 'wecom',
+            name: 'disabled',
             enabled: false,
-            config_json: { mode: "mock", routing: {} },
+            config_json: { mode: 'mock', routing: {} },
             template_json: null,
           }),
         },
@@ -156,22 +269,23 @@ describe("dispatchOutboxEvent", () => {
       config: {
         imNotifierEnabled: true,
       },
-      eventType: "notification.im",
+      eventType: 'notification.im',
       payload: {
-        channelId: "channel-2",
-        channelType: "wecom",
+        channelId: 'channel-2',
+        channelType: 'wecom',
       },
     });
 
-    expect(result.code).toBe("channel_disabled");
+    expect(result.code).toBe('channel_disabled');
     expect(result.skipped).toBe(true);
   });
 
-  it("maps wecom 4xx as non-retryable IM dispatch error", async () => {
+  it('maps wecom 4xx as non-retryable IM dispatch error', async () => {
     global.fetch = vi.fn().mockResolvedValue({
       ok: false,
       status: 400,
-      json: vi.fn().mockResolvedValue({ errcode: 40013, errmsg: "bad request" }),
+      json: vi.fn().mockResolvedValue({ errcode: 40013, errmsg: 'bad request' }),
+      headers: { get: () => 'application/json' },
     });
 
     await expect(
@@ -179,13 +293,13 @@ describe("dispatchOutboxEvent", () => {
         prisma: {
           notificationChannel: {
             findUnique: vi.fn().mockResolvedValue({
-              id: "channel-3",
-              channel_type: "wecom",
-              name: "wecom-4xx",
+              id: 'channel-3',
+              channel_type: 'wecom',
+              name: 'wecom-4xx',
               enabled: true,
               config_json: {
-                mode: "wecom_webhook",
-                webhookUrl: "https://example.com/wecom",
+                mode: 'wecom_webhook',
+                webhookUrl: 'https://example.com/wecom',
                 timeoutMs: 500,
                 routing: {},
               },
@@ -196,26 +310,27 @@ describe("dispatchOutboxEvent", () => {
         config: {
           imNotifierEnabled: true,
         },
-        eventType: "notification.im",
+        eventType: 'notification.im',
         payload: {
-          channelId: "channel-3",
-          channelType: "wecom",
-          title: "test",
-          body: "body",
+          channelId: 'channel-3',
+          channelType: 'wecom',
+          title: 'test',
+          body: 'body',
         },
       }),
     ).rejects.toMatchObject({
-      name: "IntegrationDispatchError",
-      code: "wecom_http_4xx",
+      name: 'IntegrationDispatchError',
+      code: 'wecom_http_4xx',
       retryable: false,
     });
   });
 
-  it("maps wecom 5xx as retryable IM dispatch error", async () => {
+  it('maps wecom 5xx as retryable IM dispatch error', async () => {
     global.fetch = vi.fn().mockResolvedValue({
       ok: false,
       status: 503,
-      json: vi.fn().mockResolvedValue({ errcode: 500, errmsg: "server error" }),
+      json: vi.fn().mockResolvedValue({ errcode: 500, errmsg: 'server error' }),
+      headers: { get: () => 'application/json' },
     });
 
     await expect(
@@ -223,13 +338,13 @@ describe("dispatchOutboxEvent", () => {
         prisma: {
           notificationChannel: {
             findUnique: vi.fn().mockResolvedValue({
-              id: "channel-4",
-              channel_type: "wecom",
-              name: "wecom-5xx",
+              id: 'channel-4',
+              channel_type: 'wecom',
+              name: 'wecom-5xx',
               enabled: true,
               config_json: {
-                mode: "wecom_webhook",
-                webhookUrl: "https://example.com/wecom",
+                mode: 'wecom_webhook',
+                webhookUrl: 'https://example.com/wecom',
                 timeoutMs: 500,
                 routing: {},
               },
@@ -240,36 +355,36 @@ describe("dispatchOutboxEvent", () => {
         config: {
           imNotifierEnabled: true,
         },
-        eventType: "notification.im",
+        eventType: 'notification.im',
         payload: {
-          channelId: "channel-4",
-          channelType: "wecom",
-          title: "test",
-          body: "body",
+          channelId: 'channel-4',
+          channelType: 'wecom',
+          title: 'test',
+          body: 'body',
         },
       }),
     ).rejects.toMatchObject({
-      name: "IntegrationDispatchError",
-      code: "wecom_http_5xx",
+      name: 'IntegrationDispatchError',
+      code: 'wecom_http_5xx',
       retryable: true,
     });
   });
 
-  it("maps wecom timeout as retryable IM dispatch error", async () => {
-    global.fetch = vi.fn().mockRejectedValue({ name: "AbortError" });
+  it('maps wecom timeout as retryable IM dispatch error', async () => {
+    global.fetch = vi.fn().mockRejectedValue({ name: 'AbortError' });
 
     await expect(
       dispatchOutboxEvent({
         prisma: {
           notificationChannel: {
             findUnique: vi.fn().mockResolvedValue({
-              id: "channel-5",
-              channel_type: "wecom",
-              name: "wecom-timeout",
+              id: 'channel-5',
+              channel_type: 'wecom',
+              name: 'wecom-timeout',
               enabled: true,
               config_json: {
-                mode: "wecom_webhook",
-                webhookUrl: "https://example.com/wecom",
+                mode: 'wecom_webhook',
+                webhookUrl: 'https://example.com/wecom',
                 timeoutMs: 500,
                 routing: {},
               },
@@ -280,46 +395,27 @@ describe("dispatchOutboxEvent", () => {
         config: {
           imNotifierEnabled: true,
         },
-        eventType: "notification.im",
+        eventType: 'notification.im',
         payload: {
-          channelId: "channel-5",
-          channelType: "wecom",
-          title: "test",
-          body: "body",
+          channelId: 'channel-5',
+          channelType: 'wecom',
+          title: 'test',
+          body: 'body',
         },
       }),
     ).rejects.toMatchObject({
-      name: "IntegrationDispatchError",
-      code: "wecom_timeout",
+      name: 'IntegrationDispatchError',
+      code: 'wecom_timeout',
       retryable: true,
     });
   });
 
-  it("throws non-retryable error for unsupported event", async () => {
+  it('throws error for unsupported event', async () => {
     await expect(
       dispatchOutboxEvent({
-        config: { erpSyncEnabled: true, erpSyncProvider: "mock" },
-        eventType: "unsupported.event",
-        payload: {},
+        config: {},
+        eventType: 'unknown.event',
       }),
-    ).rejects.toMatchObject({
-      name: "IntegrationDispatchError",
-      code: "unsupported_outbox_event",
-      retryable: false,
-    });
-  });
-
-  it("preserves error class semantics", () => {
-    const error = new IntegrationDispatchError({
-      code: "unit_test",
-      message: "unit test",
-      retryable: true,
-      statusCode: 503,
-    });
-
-    expect(error).toBeInstanceOf(Error);
-    expect(error.code).toBe("unit_test");
-    expect(error.retryable).toBe(true);
-    expect(error.statusCode).toBe(503);
+    ).rejects.toThrow('unsupported_outbox_event:unknown.event');
   });
 });
diff --git a/server/tests/unit/routes/integrations.erp.procurement.test.js b/server/tests/unit/routes/integrations.erp.procurement.test.js
new file mode 100644
index 00000000..48c3ac2c
--- /dev/null
+++ b/server/tests/unit/routes/integrations.erp.procurement.test.js
@@ -0,0 +1,59 @@
+const integrationsRoutes = require('../../../src/routes/integrations');
+
+describe('Integrations procurement ERP route helpers', () => {
+  const {
+    canReadPurchaseRequest,
+    ensureProcurementTargetEligible,
+    normalizeProcurementTargets,
+  } = integrationsRoutes.__testables;
+
+  it('normalizes procurement targets in fixed order', () => {
+    expect(
+      normalizeProcurementTargets({
+        targets: ['archive_summary', 'commitment_journal', 'archive_summary'],
+      }),
+    ).toEqual(['commitment_journal', 'archive_summary']);
+  });
+
+  it('respects purchase read permission rules', () => {
+    const purchaseRequest = {
+      applicant_id: 'employee-1',
+      submitter_id: 'employee-2',
+    };
+
+    expect(
+      canReadPurchaseRequest(
+        { employee: { id: 'employee-1', permissionCodes: ['procurement.view_own'] } },
+        purchaseRequest,
+      ),
+    ).toBe(true);
+    expect(
+      canReadPurchaseRequest(
+        { employee: { id: 'other', permissionCodes: ['procurement.view_own'] } },
+        purchaseRequest,
+      ),
+    ).toBe(false);
+    expect(
+      canReadPurchaseRequest(
+        { employee: { id: 'other', permissionCodes: ['integration.manage', 'procurement.view_all'] } },
+        purchaseRequest,
+      ),
+    ).toBe(true);
+  });
+
+  it('rejects commitment target when purchase is not approved', () => {
+    expect(() =>
+      ensureProcurementTargetEligible('commitment_journal', {
+        purchaseRequest: { status: 'reviewing' },
+      }),
+    ).toThrow('参数校验失败');
+  });
+
+  it('rejects archive targets when archive is missing', () => {
+    expect(() =>
+      ensureProcurementTargetEligible('accrual_journal', {
+        purchaseRequest: { status: 'approved', order_archive: null },
+      }),
+    ).toThrow('参数校验失败');
+  });
+});
diff --git a/server/tests/unit/routes/purchase.archive-erp.test.js b/server/tests/unit/routes/purchase.archive-erp.test.js
new file mode 100644
index 00000000..929edc3b
--- /dev/null
+++ b/server/tests/unit/routes/purchase.archive-erp.test.js
@@ -0,0 +1,130 @@
+const purchaseRequestRoutes = require('../../../src/routes/purchaseRequests');
+
+describe('purchase archive ERP helper', () => {
+  const { handlePurchaseArchiveErpSync } = purchaseRequestRoutes.__testables;
+
+  function createRequest() {
+    return {
+      id: 'req-1',
+      ip: '127.0.0.1',
+      headers: {},
+      employee: {
+        id: 'actor-1',
+        department_id: 'dept-1',
+        permissionCodes: ['procurement.manage'],
+      },
+    };
+  }
+
+  function createTx() {
+    return {
+      auditLog: {
+        create: vi.fn().mockResolvedValue({ id: 'audit-1' }),
+      },
+    };
+  }
+
+  function createContext() {
+    return {
+      purchaseRequest: {
+        id: 'pr-1',
+        department_id: 'dept-1',
+        order_archive: {
+          id: 'archive-1',
+          po_no: 'PO-001',
+          contract_no: 'CT-001',
+          archived_at: new Date('2026-03-08T10:30:00.000Z'),
+        },
+      },
+    };
+  }
+
+  it('first archive enqueues accrual and summary', async () => {
+    const tx = createTx();
+    const loadContext = vi.fn().mockResolvedValue(createContext());
+    const evaluateGate = vi.fn().mockResolvedValue({
+      enabled: true,
+      reason: 'env_inherit_department_allowed',
+    });
+    const enqueueAccrual = vi.fn().mockResolvedValue({
+      id: 'outbox-accrual',
+      status: 'pending',
+      duplicated: false,
+      requeued: false,
+      eventType: 'erp.journal.export',
+      erpTarget: 'accrual_journal',
+    });
+    const enqueueSummary = vi.fn().mockResolvedValue({
+      id: 'outbox-summary',
+      status: 'pending',
+      duplicated: false,
+      requeued: false,
+      eventType: 'erp.procurement.export',
+      erpTarget: 'archive_summary',
+    });
+
+    const result = await handlePurchaseArchiveErpSync({
+      tx,
+      config: {},
+      request: createRequest(),
+      actorId: 'actor-1',
+      purchaseRequestId: 'pr-1',
+      archiveId: 'archive-1',
+      isFirstArchive: true,
+      loadContext,
+      evaluateGate,
+      enqueueAccrual,
+      enqueueSummary,
+    });
+
+    expect(enqueueAccrual).toHaveBeenCalledWith(
+      tx,
+      {},
+      expect.objectContaining({ requeueOnFailure: false }),
+    );
+    expect(enqueueSummary).toHaveBeenCalledWith(
+      tx,
+      {},
+      expect.objectContaining({ requeueOnFailure: false }),
+    );
+    expect(result.items).toHaveLength(2);
+    expect(tx.auditLog.create).toHaveBeenCalledTimes(2);
+  });
+
+  it('archive update only re-enqueues summary', async () => {
+    const tx = createTx();
+    const loadContext = vi.fn().mockResolvedValue(createContext());
+    const evaluateGate = vi.fn().mockResolvedValue({
+      enabled: true,
+      reason: 'env_inherit_department_allowed',
+    });
+    const enqueueAccrual = vi.fn();
+    const enqueueSummary = vi.fn().mockResolvedValue({
+      id: 'outbox-summary',
+      status: 'pending',
+      duplicated: false,
+      requeued: true,
+      eventType: 'erp.procurement.export',
+      erpTarget: 'archive_summary',
+    });
+
+    const result = await handlePurchaseArchiveErpSync({
+      tx,
+      config: {},
+      request: createRequest(),
+      actorId: 'actor-1',
+      purchaseRequestId: 'pr-1',
+      archiveId: 'archive-1',
+      isFirstArchive: false,
+      loadContext,
+      evaluateGate,
+      enqueueAccrual,
+      enqueueSummary,
+    });
+
+    expect(enqueueAccrual).not.toHaveBeenCalled();
+    expect(enqueueSummary).toHaveBeenCalled();
+    expect(result.items).toHaveLength(1);
+    expect(result.items[0].erpTarget).toBe('archive_summary');
+  });
+});
diff --git a/server/tests/unit/routes/workflow.purchase-erp.test.js b/server/tests/unit/routes/workflow.purchase-erp.test.js
new file mode 100644
index 00000000..92bfb689
--- /dev/null
+++ b/server/tests/unit/routes/workflow.purchase-erp.test.js
@@ -0,0 +1,114 @@
+const workflowRoutes = require('../../../src/routes/workflow');
+
+describe('workflow purchase ERP helper', () => {
+  const { handlePurchaseApprovalErpSync } = workflowRoutes.__testables;
+
+  function createRequest() {
+    return {
+      id: 'req-1',
+      ip: '127.0.0.1',
+      headers: {},
+      employee: {
+        id: 'actor-1',
+        department_id: 'dept-1',
+        permissionCodes: ['procurement.manage'],
+      },
+    };
+  }
+
+  function createTx() {
+    return {
+      auditLog: {
+        create: vi.fn().mockResolvedValue({ id: 'audit-1' }),
+      },
+    };
+  }
+
+  it('auto enqueues commitment journal when gate is enabled', async () => {
+    const tx = createTx();
+    const loadContext = vi.fn().mockResolvedValue({
+      purchaseRequest: {
+        id: 'pr-1',
+        department_id: 'dept-1',
+      },
+      approvalOccurredAt: new Date('2026-03-08T10:00:00.000Z'),
+    });
+    const evaluateGate = vi.fn().mockResolvedValue({
+      enabled: true,
+      reason: 'env_inherit_department_allowed',
+    });
+    const enqueueCommitment = vi.fn().mockResolvedValue({
+      id: 'outbox-1',
+      status: 'pending',
+      duplicated: false,
+      requeued: false,
+      eventType: 'erp.journal.export',
+    });
+
+    const result = await handlePurchaseApprovalErpSync({
+      tx,
+      config: {},
+      request: createRequest(),
+      actorId: 'actor-1',
+      purchaseRequestId: 'pr-1',
+      loadContext,
+      evaluateGate,
+      enqueueCommitment,
+    });
+
+    expect(enqueueCommitment).toHaveBeenCalledWith(
+      tx,
+      {},
+      expect.objectContaining({
+        actorId: 'actor-1',
+        requeueOnFailure: false,
+      }),
+    );
+    expect(tx.auditLog.create).toHaveBeenCalledWith(
+      expect.objectContaining({
+        data: expect.objectContaining({
+          action: 'ERP_SYNC_ENQUEUED',
+          target_type: 'purchase_request',
+          target_id: 'pr-1',
+        }),
+      }),
+    );
+    expect(result.skipped).toBe(false);
+  });
+
+  it('writes skip audit when approval gate is disabled', async () => {
+    const tx = createTx();
+    const loadContext = vi.fn().mockResolvedValue({
+      purchaseRequest: {
+        id: 'pr-1',
+        department_id: 'dept-1',
+      },
+      approvalOccurredAt: new Date('2026-03-08T10:00:00.000Z'),
+    });
+    const evaluateGate = vi.fn().mockResolvedValue({ enabled: false, reason: 'flag_force_off' });
+    const enqueueCommitment = vi.fn();
+
+    const result = await handlePurchaseApprovalErpSync({
+      tx,
+      config: {},
+      request: createRequest(),
+      actorId: 'actor-1',
+      purchaseRequestId: 'pr-1',
+      loadContext,
+      evaluateGate,
+      enqueueCommitment,
+    });
+
+    expect(enqueueCommitment).not.toHaveBeenCalled();
+    expect(tx.auditLog.create).toHaveBeenCalledWith(
+      expect.objectContaining({
+        data: expect.objectContaining({
+          action: 'ERP_SYNC_SKIPPED_BY_FEATURE_FLAG',
+          target_type: 'purchase_request',
+          target_id: 'pr-1',
+        }),
+      }),
+    );
+    expect(result.skipped).toBe(true);
+  });
+});
diff --git a/server/tests/unit/services/erpJournal.test.js b/server/tests/unit/services/erpJournal.test.js
index d8f71942..4a211574 100644
--- a/server/tests/unit/services/erpJournal.test.js
+++ b/server/tests/unit/services/erpJournal.test.js
@@ -72,7 +72,7 @@ describe('ERP Journal Service', () => {
           dedupe_key: 'reimbursement:rb-1:paid',
         },
       },
-      select: { id: true, status: true },
+      select: { id: true, status: true, payload: true },
     });
     expect(prisma.integrationOutbox.create).toHaveBeenCalled();
     expect(result.eventType).toBe('erp.journal.export');
diff --git a/server/tests/unit/services/erpProcurement.test.js b/server/tests/unit/services/erpProcurement.test.js
new file mode 100644
index 00000000..9ebcd58f
--- /dev/null
+++ b/server/tests/unit/services/erpProcurement.test.js
@@ -0,0 +1,144 @@
+const {
+  buildPurchaseAccrualJournalPayload,
+  buildPurchaseArchiveSummaryPayload,
+  buildPurchaseCommitmentJournalPayload,
+  enqueuePurchaseArchiveSummaryExport,
+  hashProcurementPayload,
+} = require('../../../src/services/integrations/erpProcurement');
+
+describe('ERP Procurement Service', () => {
+  it('builds commitment payload with procurement dimensions', () => {
+    const payload = buildPurchaseCommitmentJournalPayload({
+      purchaseRequest: {
+        id: 'pr-1',
+        request_no: 'PR-001',
+        applicant_id: 'applicant-1',
+        submitter_id: 'submitter-1',
+        department_id: 'dept-1',
+        total_amount: { toString: () => '880.00' },
+        currency_code: 'CNY',
+        legal_entity: { code: 'HY' },
+        cost_center: { code: 'IT001' },
+        supplier: { code: 'SUP001' },
+        budget_pool: { code: 'BG-IT-2026' },
+        document_category: { code: 'PR_STANDARD' },
+      },
+      occurredAt: '2026-03-08T10:00:00.000Z',
+    });
+
+    expect(payload.journalType).toBe('purchase_request_commitment');
+    expect(payload.references.requestNo).toBe('PR-001');
+    expect(payload.dimensions.legalEntityCode).toBe('HY');
+    expect(payload.dimensions.costCenterCode).toBe('IT001');
+    expect(payload.dimensions.supplierCode).toBe('SUP001');
+    expect(payload.dimensions.budgetPoolCode).toBe('BG-IT-2026');
+  });
+
+  it('builds accrual payload from archive facts', () => {
+    const payload = buildPurchaseAccrualJournalPayload({
+      purchaseRequest: {
+        id: 'pr-1',
+        request_no: 'PR-001',
+        applicant_id: 'applicant-1',
+        submitter_id: 'submitter-1',
+        department_id: 'dept-1',
+        total_amount: '880.00',
+        currency_code: 'CNY',
+        legal_entity: { code: 'HY' },
+        cost_center: { code: 'IT001' },
+        supplier: { code: 'SUP001' },
+        budget_pool: { code: 'BG-IT-2026' },
+      },
+      archive: {
+        id: 'archive-1',
+        po_no: 'PO-001',
+        contract_no: 'CT-001',
+        archived_at: '2026-03-08T10:30:00.000Z',
+      },
+    });
+
+    expect(payload.journalType).toBe('purchase_order_accrual');
+    expect(payload.entityId).toBe('archive-1');
+    expect(payload.documentNo).toBe('PO-001');
+    expect(payload.references.contractNo).toBe('CT-001');
+  });
+
+  it('builds archive summary payload and hashes payload changes', () => {
+    const basePayload = buildPurchaseArchiveSummaryPayload({
+      purchaseRequest: {
+        id: 'pr-1',
+        request_no: 'PR-001',
+        department_id: 'dept-1',
+        total_amount: '880.00',
+        currency_code: 'CNY',
+        legal_entity: { code: 'HY' },
+        cost_center: { code: 'IT001' },
+        supplier: { id: 'sup-1', code: 'SUP001', name: '演示供应商' },
+      },
+      archive: {
+        id: 'archive-1',
+        po_no: 'PO-001',
+        contract_no: 'CT-001',
+        archived_at: '2026-03-08T10:30:00.000Z',
+        archived_files: [
+          {
+            storagePath: 'purchase-requests/pr-1/contract.pdf',
+            originalName: 'contract.pdf',
+            mimeType: 'application/pdf',
+            fileSize: 1024,
+          },
+        ],
+      },
+    });
+
+    const changedPayload = {
+      ...basePayload,
+      contractNo: 'CT-002',
+    };
+
+    expect(basePayload.files).toHaveLength(1);
+    expect(hashProcurementPayload(basePayload)).not.toBe(hashProcurementPayload(changedPayload));
+  });
+
+  it('resets archive summary outbox when payload changes', async () => {
+    const prisma = {
+      integrationOutbox: {
+        findUnique: vi.fn().mockResolvedValue({
+          id: 'outbox-1',
+          status: 'succeeded',
+          payload: { contractNo: 'CT-001', poNo: 'PO-001' },
+        }),
+        update: vi.fn().mockResolvedValue({ id: 'outbox-1', status: 'pending' }),
+      },
+    };
+
+    const result = await enqueuePurchaseArchiveSummaryExport(
+      prisma,
+      { integrationOutboxMaxAttempts: 5 },
+      {
+        actorId: 'actor-1',
+        purchaseRequest: {
+          id: 'pr-1',
+          request_no: 'PR-001',
+          department_id: 'dept-1',
+          total_amount: '880.00',
+          currency_code: 'CNY',
+          supplier: { id: 'sup-1', code: 'SUP001', name: '演示供应商' },
+          legal_entity: { code: 'HY' },
+          cost_center: { code: 'IT001' },
+        },
+        archive: {
+          id: 'archive-1',
+          po_no: 'PO-001',
+          contract_no: 'CT-002',
+          archived_at: '2026-03-08T10:30:00.000Z',
+          archived_files: [],
+        },
+      },
+    );
+
+    expect(prisma.integrationOutbox.update).toHaveBeenCalled();
+    expect(result.requeued).toBe(true);
+    expect(result.eventType).toBe('erp.procurement.export');
+  });
+});
diff --git a/server/tests/unit/services/integrations/erp.test.js b/server/tests/unit/services/integrations/erp.test.js
index 29860068..616b5933 100644
--- a/server/tests/unit/services/integrations/erp.test.js
+++ b/server/tests/unit/services/integrations/erp.test.js
@@ -33,11 +33,22 @@ describe('ERP Sync Services', () => {
   it('returns mock synced when journal export provider is mock', async () => {
     const result = await erp.exportJournalToErp(
       { erpSyncEnabled: true, erpSyncProvider: 'mock' },
-      { documentNo: 'BX-001' },
+      { journalType: 'purchase_request_commitment', documentNo: 'PR-001' },
     );
     expect(result.ok).toBe(true);
     expect(result.code).toBe('mock_synced');
-    expect(result.response.externalId).toContain('BX-001');
+    expect(result.response.externalId).toContain('PR-001');
+  });
+
+  it('returns mock procurement result when provider is mock', async () => {
+    const result = await erp.exportProcurementToErp(
+      { erpSyncEnabled: true, erpSyncProvider: 'mock' },
+      { poNo: 'PO-001', contractNo: 'CT-001' },
+    );
+    expect(result.ok).toBe(true);
+    expect(result.code).toBe('mock_synced');
+    expect(result.response.externalPoNo).toContain('PO-001');
+    expect(result.response.externalContractNo).toContain('CT-001');
   });
 
   it('returns mock master data result when provider is mock', async () => {
@@ -74,6 +85,70 @@ describe('ERP Sync Services', () => {
     expect(result.retryable).toBe(false);
   });
 
+  it('handles http journal export 5xx errors', async () => {
+    global.fetch = vi.fn().mockResolvedValue({
+      ok: false,
+      status: 503,
+      headers: { get: () => 'application/json' },
+      json: vi.fn().mockResolvedValue({ code: 'service_unavailable' }),
+    });
+
+    const result = await erp.exportJournalToErp(
+      {
+        erpSyncEnabled: true,
+        erpSyncProvider: 'http',
+        erpJournalExportEndpoint: 'https://example.com/journals',
+        erpSyncTimeoutMs: 500,
+      },
+      { journalType: 'purchase_order_accrual', documentNo: 'PO-001' },
+    );
+
+    expect(result.ok).toBe(false);
+    expect(result.code).toBe('erp_sync_http_5xx');
+    expect(result.retryable).toBe(true);
+  });
+
+  it('handles http procurement export 4xx errors', async () => {
+    global.fetch = vi.fn().mockResolvedValue({
+      ok: false,
+      status: 400,
+      headers: { get: () => 'application/json' },
+      json: vi.fn().mockResolvedValue({ code: 'bad_request' }),
+    });
+
+    const result = await erp.exportProcurementToErp(
+      {
+        erpSyncEnabled: true,
+        erpSyncProvider: 'http',
+        erpProcurementExportEndpoint: 'https://example.com/procurement',
+        erpProcurementTimeoutMs: 500,
+      },
+      { exportType: 'purchase_order_archive', poNo: 'PO-001' },
+    );
+
+    expect(result.ok).toBe(false);
+    expect(result.code).toBe('erp_procurement_http_4xx');
+    expect(result.retryable).toBe(false);
+  });
+
+  it('handles http procurement export timeout', async () => {
+    global.fetch = vi.fn().mockRejectedValue({ name: 'AbortError' });
+
+    const result = await erp.exportProcurementToErp(
+      {
+        erpSyncEnabled: true,
+        erpSyncProvider: 'http',
+        erpProcurementExportEndpoint: 'https://example.com/procurement',
+        erpProcurementTimeoutMs: 500,
+      },
+      { exportType: 'purchase_order_archive', poNo: 'PO-001' },
+    );
+
+    expect(result.ok).toBe(false);
+    expect(result.code).toBe('erp_procurement_timeout');
+    expect(result.retryable).toBe(true);
+  });
+
   it('handles http journal export timeout', async () => {
     global.fetch = vi.fn().mockRejectedValue({ name: 'AbortError' });