diff --git a/src/WMS.Web.Domain/Entitys/InStockErpDetails.cs b/src/WMS.Web.Domain/Entitys/InStockErpDetails.cs
index 65a8cce3..fa13bf4b 100644
--- a/src/WMS.Web.Domain/Entitys/InStockErpDetails.cs
+++ b/src/WMS.Web.Domain/Entitys/InStockErpDetails.cs
@@ -63,12 +63,12 @@ namespace WMS.Web.Domain.Entitys
         /// <summary>
         /// 箱唛编号-首位
         /// </summary>
-        public int FirstBillNo { get; set; }
+        public int? FirstBillNo { get; set; }
 
         /// <summary>
         /// 箱唛编号-末尾序号
         /// </summary>
-        public int LastBillNo { get; set; }
+        public int? LastBillNo { get; set; }
 
         /// <summary>
         /// 生成批号