diff --git a/AMESCoreStudio.WebApi/Controllers/AMES/NgRepairsController.cs b/AMESCoreStudio.WebApi/Controllers/AMES/NgRepairsController.cs
index 7256adfd..2b9631b4 100644
--- a/AMESCoreStudio.WebApi/Controllers/AMES/NgRepairsController.cs
+++ b/AMESCoreStudio.WebApi/Controllers/AMES/NgRepairsController.cs
@@ -1605,6 +1605,7 @@ and d.wip_no = '{0}' and a.station_id={1} and b.part_no='{2}'", wipNo, stationID
             }
 
             _context.Entry(ngRepair).State = EntityState.Modified;
+            _context.Entry(ngRepair).Property(p => p.CreateUserID).IsModified = false;
 
             try
             {
diff --git a/AMESCoreStudio.WebApi/Models/AMES/RMAClass.cs b/AMESCoreStudio.WebApi/Models/AMES/RMAClass.cs
index a5360daa..aa2d77cb 100644
--- a/AMESCoreStudio.WebApi/Models/AMES/RMAClass.cs
+++ b/AMESCoreStudio.WebApi/Models/AMES/RMAClass.cs
@@ -19,7 +19,7 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         [Column("RMA_CLASS_NO")]
         [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "維修類別代碼")]
-        [StringLength(6, ErrorMessage = "{0},不能大于{1}")]
+        [StringLength(20, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]
         public string RMAClassNo { get; set; }
 
@@ -30,7 +30,7 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         [Column("RMA_GROUP_NO")]
         [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "維修群組代碼")]
-        [StringLength(6, ErrorMessage = "{0},不能大于{1}")]
+        [StringLength(20, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]
         public string RMAGroupNo { get; set; }
 
diff --git a/AMESCoreStudio.WebApi/Models/AMES/RMAGroup.cs b/AMESCoreStudio.WebApi/Models/AMES/RMAGroup.cs
index ffe6f8f7..9c7bec4f 100644
--- a/AMESCoreStudio.WebApi/Models/AMES/RMAGroup.cs
+++ b/AMESCoreStudio.WebApi/Models/AMES/RMAGroup.cs
@@ -19,7 +19,7 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         [Column("RMA_GROUP_NO")]
         [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "維修群組代碼")]
-        [StringLength(6, ErrorMessage = "{0},不能大于{1}")]
+        [StringLength(20, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]
         public string RMAGroupNo { get; set; }
 
diff --git a/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs b/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs
index a2d9e92d..656d996e 100644
--- a/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs
+++ b/AMESCoreStudio.WebApi/Models/AMES/RMAReason.cs
@@ -19,7 +19,7 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         [Column("RMA_REASON_NO")]
         [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "維修原因代碼")]
-        [StringLength(6, ErrorMessage = "{0},不能大于{1}")]
+        [StringLength(20, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]
         public string RMAReasonNo { get; set; }
 
@@ -29,7 +29,7 @@ namespace AMESCoreStudio.WebApi.Models.AMES
         [Column("RMA_CLASS_NO")]
         [Required(ErrorMessage = "{0},不能空白")]
         [Display(Name = "維修類別代碼")]
-        [StringLength(6, ErrorMessage = "{0},不能大于{1}")]
+        [StringLength(20, ErrorMessage = "{0},不能大于{1}")]
         [DataMember]
         public string RMAClassNo { get; set; }