diff --git a/scripts/admin-test-env-modules/phase3-container-documents.mjs b/scripts/admin-test-env-modules/phase3-container-documents.mjs
index c76a65d4e..93c2ba943 100644
--- a/scripts/admin-test-env-modules/phase3-container-documents.mjs
+++ b/scripts/admin-test-env-modules/phase3-container-documents.mjs
@@ -11,7 +11,7 @@ function codeOf(response) { return response?.body?.code == null ? 'missing' : St
 function success(response) { return response?.http === 200 && codeOf(response) === '200' }
 function conflict(response) { return response?.http === 200 && codeOf(response) === 'A0409' }
 function traced(response) { return Boolean(response?.requestId) && Boolean(response?.traceId) }
-function key(context, label) { return `${context.marker}-four-documents-${label}`.slice(0, 128) }
+function key(context, label) { return `${context.marker}-operational-documents-${label}`.slice(0, 128) }
 function validDocument(document, type, completed) {
   return Boolean(document?.id) && Boolean(document?.fileId) && document?.documentType === type
     && /^[0-9a-f]{64}$/i.test(String(document?.fileHash || ''))
diff --git a/scripts/admin-test-env-modules/phase4-overseas-pda.mjs b/scripts/admin-test-env-modules/phase4-overseas-pda.mjs
index 1c87eb5f7..b2036d8d0 100644
--- a/scripts/admin-test-env-modules/phase4-overseas-pda.mjs
+++ b/scripts/admin-test-env-modules/phase4-overseas-pda.mjs
@@ -752,6 +752,7 @@ export async function run(context) {
     primary: primary ? { membershipId: primary.membershipId, username: primary.username, token: primary.token } : null,
     secondary: secondary ? { membershipId: secondary.membershipId, username: secondary.username, token: secondary.token } : null,
     overseasWarehouseId: sharedWarehouse.id,
+    merchantToken,
     completedFixtures: [],
     cleanup,
   }
diff --git a/scripts/admin-test-env-modules/phase5-overseas-fulfillment-contract.test.mjs b/scripts/admin-test-env-modules/phase5-overseas-fulfillment-contract.test.mjs
index 36cc8df3a..a2a9271f9 100644
--- a/scripts/admin-test-env-modules/phase5-overseas-fulfillment-contract.test.mjs
+++ b/scripts/admin-test-env-modules/phase5-overseas-fulfillment-contract.test.mjs
@@ -58,6 +58,8 @@ test('phase-five module proves completion, customer visit, manual exception and
     '/customer-visits/${encodeURIComponent(visitId)}',
     "visitResult: 'SATISFIED'", '/exception-orders',
     '/return-inbound-options', '/mark-return', "returnDirection: 'OVERSEAS_WAREHOUSE'",
+    'returnSources', 'outboundPalletItemId', 'inventoryPositionId',
+    "idempotencyKey: key(context, 'DELIVERY-RETURN')", '派送退回同键同载荷重放',
     'RETURN_PENDING_WITH_COMPLETED_VISIT',
   ]) assert.ok(source.includes(token), token)
   assert.match(source, /manualExceptionNo/)
diff --git a/scripts/admin-test-env-modules/phase5-overseas-fulfillment.mjs b/scripts/admin-test-env-modules/phase5-overseas-fulfillment.mjs
index def07f1e2..e3ffdb708 100644
--- a/scripts/admin-test-env-modules/phase5-overseas-fulfillment.mjs
+++ b/scripts/admin-test-env-modules/phase5-overseas-fulfillment.mjs
@@ -321,18 +321,36 @@ export async function run(context) {
   context.assert(MODULE, '退回候选严格属于当前派送单', returnOptions.response,
     Boolean(returnInbound), `candidate=${Boolean(returnInbound)}; ${trace(returnOptions.response)}`, OPTIONS)
   if (!returnInbound) return
+  const returnSource = Array.isArray(returnInbound.returnSources)
+    ? returnInbound.returnSources.find((value) => id(value?.outboundPalletItemId)
+      && id(value?.inventoryPositionId) && Number(value?.maxReturnPackages) > 0) : null
+  context.assert(MODULE, '退回候选包含可追溯的出库托盘库存来源', returnOptions.response,
+    Boolean(returnSource), `source=${Boolean(returnSource)}; ${trace(returnOptions.response)}`, OPTIONS)
+  if (!returnSource) return
+  const returnBody = {
+    inboundOrderId: id(returnInbound.inboundOrderId), reason: `${context.marker}-delivery-return`,
+    returnDirection: 'OVERSEAS_WAREHOUSE', returnLogisticsNo: `${context.marker}-RETURN`.slice(0, 128),
+    items: [{
+      outboundPalletItemId: id(returnSource.outboundPalletItemId),
+      inventoryPositionId: id(returnSource.inventoryPositionId),
+      packageCount: 1,
+    }],
+    idempotencyKey: key(context, 'DELIVERY-RETURN'),
+  }
   const returned = await platform(context, 'POST', '标记派送退回海外仓并创建退货异常',
-    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/mark-return`, { customerId }), {
-      inboundOrderId: id(returnInbound.inboundOrderId), reason: `${context.marker}-delivery-return`,
-      returnDirection: 'OVERSEAS_WAREHOUSE', returnLogisticsNo: `${context.marker}-RETURN`.slice(0, 128),
-      packageCount: 1, skuCode: null,
-    })
+    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/mark-return`, { customerId }), returnBody)
   const returnExceptionNo = id(returned.data?.exceptionNo)
   context.assert(MODULE, '派送退回生成独立PENDING异常单', returned.response,
     nonBlank(returnExceptionNo) && returned.data?.status === 'PENDING'
       && returnExceptionNo !== manualExceptionNo, trace(returned.response), OPTIONS)
   context.createdResources.phase5OverseasFulfillment.returnExceptionNo = returnExceptionNo || null
 
+  const returnReplay = await platform(context, 'POST', '派送退回同键同载荷重放',
+    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/mark-return`, { customerId }), returnBody)
+  context.assert(MODULE, '派送退回重放复用同一异常单', returnReplay.response,
+    returnReplay.data?.replayed === true && id(returnReplay.data?.exceptionNo) === returnExceptionNo,
+    trace(returnReplay.response), OPTIONS)
+
   const delivery = await platform(context, 'GET', '回查派送退回终态',
     query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}`, { customerId }))
   context.assert(MODULE, '派送退回后单据状态为RETURN_PENDING且保留出库关联', delivery.response,