diff --git a/scripts/admin-test-env-modules/finance-full-fixtures-contract.test.mjs b/scripts/admin-test-env-modules/finance-full-fixtures-contract.test.mjs
index fd00a5d87..7de836e32 100644
--- a/scripts/admin-test-env-modules/finance-full-fixtures-contract.test.mjs
+++ b/scripts/admin-test-env-modules/finance-full-fixtures-contract.test.mjs
@@ -152,7 +152,8 @@ test('fixture creates four real receivable manual sources before payable source'
 })
 
 test('container cost uses loading plan identity and verifies snapshot fields before Finance', () => {
-  assert.match(source, /containerId: Number\(container\.loadingPlanId\)/)
+  assert.match(source, /containerId: String\(container\.loadingPlanId\)/)
+  assert.doesNotMatch(source, /containerId: Number\(container\.loadingPlanId\)/)
   assert.match(source, /smart-loading\/plans\/\$\{encodeURIComponent\(container\.loadingPlanId\)\}/)
   assert.match(source, /id\(item\?\.accountId\) === id\(customerId\)/)
   assert.match(source, /Number\(item\?\.orderId\) > 0/)
diff --git a/scripts/admin-test-env-modules/finance-full-fixtures.mjs b/scripts/admin-test-env-modules/finance-full-fixtures.mjs
index a97d00ce0..0b7f86e78 100644
--- a/scripts/admin-test-env-modules/finance-full-fixtures.mjs
+++ b/scripts/admin-test-env-modules/finance-full-fixtures.mjs
@@ -258,7 +258,7 @@ async function createContainerCost(context, customerId, container, voucherFileId
   const body = { customerId: Number(customerId), costType: 'CONTAINER_SHARED', orderId: null,
     // Finance names this field containerId, but its Firstleg cost snapshot contract
     // resolves it as the loading plan ID, not the physical container booking ID.
-    containerId: Number(container.loadingPlanId), expenseName: `${context.marker}-整柜成本`, amount: 300,
+    containerId: String(container.loadingPlanId), expenseName: `${context.marker}-整柜成本`, amount: 300,
     currency: 'CNY', voucherFileIds: [voucherFileId], remark: context.marker }
   const response = await request(context, 'POST', '/api/platform/finance/v1/cost-entries', body)
   if (response?.body?.code === 'FIN_400') {