改bug

be/Modules/Store/src/Win_in.Sfs.Wms.Store.Domain/Requests/PurchaseReturnRequests/PurchaseReturnRequestManager.cs

@@ -1,5 +1,7 @@
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
+using Volo.Abp;
 using Volo.Abp.Uow;
 using Win_in.Sfs.Shared.Domain.Shared;
 
@@ -19,8 +21,14 @@ public class PurchaseReturnRequestManager : SfsStoreRequestManagerBase<PurchaseR
     public override async Task<List<PurchaseReturnRequest>> CreateManyAsync(List<PurchaseReturnRequest> entities)
     {
         var results = new List<PurchaseReturnRequest>();
+
         foreach (var entity in entities)
         {
+            var lst = await Repository.GetPagedListAsync(itm => itm.PoNumber == entity.PoNumber && itm.Details.Any(itm => itm.PackingCode == entity.Details[0].PackingCode), 0, 1, null).ConfigureAwait(false);
+            if (lst.Count > 0)
+            {
+                throw new UserFriendlyException($"采购退货申请的订单号{entity.PoNumber}、箱码{entity.Details[0].PackingCode}重复");
+            }
             entity.SetIdAndNumberWithDetails(GuidGenerator, await GenerateNumberAsync(typeof(PurchaseReturnRequest).Name, entity.ActiveDate).ConfigureAwait(false));
             PurchaseReturnRequest result;
             if (entity.AutoSubmit)