diff --git a/BBWY.Client/Models/PurchaseOrder/CargoParam.cs b/BBWY.Client/Models/PurchaseOrder/CargoParam.cs
index 68e2714b..7d07f421 100644
--- a/BBWY.Client/Models/PurchaseOrder/CargoParam.cs
+++ b/BBWY.Client/Models/PurchaseOrder/CargoParam.cs
@@ -12,6 +12,6 @@ namespace BBWY.Client.Models
         public int Quantity { get; set; }
         public string BelongSkuId { get; set; }
 
-        public long? SchemeId { get; set; }
+        public long SchemeId { get; set; }
     }
 }