diff --git a/AMESCoreStudio.WebApi/Models/AMES/NGReason.cs b/AMESCoreStudio.WebApi/Models/AMES/NGReason.cs
index bb1728bb..02a30971 100644
--- a/AMESCoreStudio.WebApi/Models/AMES/NGReason.cs
+++ b/AMESCoreStudio.WebApi/Models/AMES/NGReason.cs
@@ -47,7 +47,6 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         /// 不良現象原因英文描述
         /// </summary>
         [Column("NG_REASON_DESC_EN")]
-        [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "不良原因英文描述")]
         [StringLength(100, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]
diff --git a/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs b/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs
index d07b247e..a2d9e92d 100644
--- a/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs
+++ b/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs
@@ -47,7 +47,6 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         /// 維修原因英文描述
         /// </summary>
         [Column("RMA_REASON_DESC_EN")]
-        [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "維修原因英文描述")]
         [StringLength(200, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]