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 30cf9d1e0..2d9e6fe13 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
@@ -38,6 +38,7 @@ test('PAYABLE fee selection uses only the explicit nullable supplierCategory fie
   assert.equal(supplierCategoryForFeeItem({ supplierCategory: 'BOOKING', feeTypeName: '操作费' }), 'BOOKING')
   assert.equal(supplierCategoryForFeeItem({ supplierCategory: null, feeTypeName: '拖车费' }), null)
   assert.equal(supplierCategoryForFeeItem({ supplierCategory: 'INVALID' }), null)
+  assert.match(source, /payableSupplierCategory && source\.supplierCategory !== payableSupplierCategory/)
 })
 
 test('Finance PAYABLE fixture creates an isolated ACTIVE supplier through the formal API', () => {
diff --git a/scripts/admin-test-env-modules/finance-full-fixtures.mjs b/scripts/admin-test-env-modules/finance-full-fixtures.mjs
index 38e08b742..f68388559 100644
--- a/scripts/admin-test-env-modules/finance-full-fixtures.mjs
+++ b/scripts/admin-test-env-modules/finance-full-fixtures.mjs
@@ -498,7 +498,7 @@ export async function run(context) {
   const invalidFixtureSources = fixtureSources.filter((source) => !source.feeSourceId || !source.customerId
     || !source.businessDate || !(source.waybillId || source.shipmentId || source.orderNo) || source.marker !== context.marker
     || (source.direction === 'PAYABLE' && (!source.supplierId || !source.supplierName
-      || source.supplierCategory !== payableSupplierCategory)))
+      || (payableSupplierCategory && source.supplierCategory !== payableSupplierCategory))))
   context.assert(MODULE, '输出完整 Finance 来源契约', null, invalidFixtureSources.length === 0,
     `sources=${fixtureSources.length}, invalid=${invalidFixtureSources.length}；字段必须来自本轮费用来源、客户、订单/运单和真实柜次分摊`, OPTIONS)
   context.createdResources.financeFullFixtures = {