diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/transfer/service/WarehouseTransferServiceTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/transfer/service/WarehouseTransferServiceTest.java
index bb587c13a..d68230850 100644
--- a/lastleg-service/src/test/java/com/baiyue/lastleg/transfer/service/WarehouseTransferServiceTest.java
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/transfer/service/WarehouseTransferServiceTest.java
@@ -513,12 +513,19 @@ class WarehouseTransferServiceTest {
         verifyNoInteractions(transfers);
     }
 
+    /** 来源箱快照先通过占用校验，再单独拒绝草稿中的外部换标箱。 */
     @Test
     void submittingOldDraftRechecksRelabelCartonOwnership() {
         var transfer = transfer(WarehouseTransferService.DRAFT);
         transfer.setOperatingWarehouseId("WH-1");
         transfer.setInboundCode("IN-1");
         transfer.setNeedRelabel(true);
+        transfer.setPackageCount(1);
+        var selected = new WarehouseTransferCarton();
+        selected.setId(51L); selected.setCustomerCartonMark("CURRENT-BOX");
+        when(transferCartons.listOrder("TENANT-A", transfer.getId())).thenReturn(List.of(selected));
+        when(inboundSnapshots.sourceCartons("TENANT-A", "WH-1", "IN-1"))
+            .thenReturn(List.of(new InboundSnapshotMapper.SourceCarton("CURRENT-BOX", "SKU-1", null, null, null, null, null)));
         when(transfers.lockNo("TENANT-A", "WTR-1")).thenReturn(transfer);
         var binding = new com.baiyue.lastleg.transfer.entity.WarehouseTransferRelabelBinding();
         binding.setCustomerCartonMark("FOREIGN-BOX");