diff --git a/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/DbContext/V1ScpDbContextModelCreatingExtensions.cs b/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/DbContext/V1ScpDbContextModelCreatingExtensions.cs
index fa36654..ae5eafc 100644
--- a/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/DbContext/V1ScpDbContextModelCreatingExtensions.cs
+++ b/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/DbContext/V1ScpDbContextModelCreatingExtensions.cs
@@ -112,7 +112,7 @@ namespace Win_in.Sfs.Scp.v1.EntityFrameworkCore
                 b.Property(q => q.Id).HasColumnName("UID").ValueGeneratedOnAdd();
                 b.Property(q => q.Site).HasMaxLength(50).IsRequired();
                 b.Property(q => q.PoBillNum).HasMaxLength(50).IsRequired();
-                b.Property(q => q.ErpBillNum).HasMaxLength(50).IsRequired();
+                b.Property(q => q.ErpBillNum).HasMaxLength(50);
                 b.Property(q => q.VendId).HasMaxLength(50).IsRequired();
                 b.Property(q => q.ModType);
                 b.Property(q => q.Contacter).HasMaxLength(50);
@@ -120,7 +120,7 @@ namespace Win_in.Sfs.Scp.v1.EntityFrameworkCore
                 b.Property(q => q.BuyerPhone).HasMaxLength(50);
                 b.Property(q => q.Remark).HasMaxLength(500);
                 b.Property(q => q.BeginTime).IsRequired();
-                b.Property(q => q.EndTime).IsRequired();
+                b.Property(q => q.EndTime);
                 b.Property(q => q.Extend1);
                 b.Property(q => q.Extend2);
                 b.Property(q => q.Extend3);
@@ -151,13 +151,13 @@ namespace Win_in.Sfs.Scp.v1.EntityFrameworkCore
                 b.Property(q => q.Site).HasMaxLength(50).IsRequired();
                 b.Property(q => q.PoBillNum).HasMaxLength(50).IsRequired();
                 b.Property(q => q.PoLine);
-                b.Property(q => q.BeginTime).IsRequired();
-                b.Property(q => q.EndTime).IsRequired();
+                b.Property(q => q.BeginTime);
+                b.Property(q => q.EndTime);
                 b.Property(q => q.PartCode).HasMaxLength(50).IsRequired();
                 b.Property(q => q.ShippedQty).HasPrecision(18,6);
                 b.Property(q => q.ReceivedQty).HasPrecision(18, 6);
                 b.Property(q => q.RejectQty).HasPrecision(18, 6);
-                b.Property(q => q.PoUnit).HasMaxLength(50).IsRequired();
+                b.Property(q => q.PoUnit).HasMaxLength(50);
                 b.Property(q => q.LocUnit).HasMaxLength(50);
                 b.Property(q => q.Price).HasPrecision(18, 6);
                 b.Property(q => q.Currency).HasMaxLength(50);
diff --git a/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/Repositories/TbPoRepository.cs b/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/Repositories/TbPoRepository.cs
index 65bf400..feac6b9 100644
--- a/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/Repositories/TbPoRepository.cs
+++ b/WebApiService/src/Win_in.Sfs.Scp.v1.EntityFrameworkCore/Repositories/TbPoRepository.cs
@@ -17,7 +17,7 @@ namespace Win_in.Sfs.Scp.v1.EntityFrameworkCore
             TB_PO ret;
             var dbSet = await GetDbSetAsync();
             var current = await dbSet.FirstOrDefaultAsync(p => p.Site == tbPo.Site
-                                                               && p.ErpBillNum == tbPo.ErpBillNum);
+                                                               && p.PoBillNum == tbPo.PoBillNum);
             if (current == null)
             {
                 ret = await InsertAsync(tbPo);