server/AyaNova/biz/PartAssemblyBiz.cs

@@ -119,9 +119,9 @@ namespace AyaNova.Biz
                     pai.PartViz = partNames.Where(z => z.Id == pai.PartId).First().Name;
                 }
                 //sort in place by partviz
-                ret.Items.Sort((lhs,rhs)=> lhs.PartViz.CompareTo(rhs.PartViz));
+                ret.Items.Sort((lhs, rhs) => lhs.PartViz.CompareTo(rhs.PartViz));
             }
-            
+
             return ret;
         }
 
@@ -269,13 +269,27 @@ namespace AyaNova.Biz
             }
 
             //no duplicate parts
-            //this would be caused by an API user not our UI so no need to translation
-            if (proposedObj.Items.GroupBy(z => z.PartId).Any(g => g.Count() > 1))
+            List<long> SeenPartIds = new List<long>();
+            for (int i = 0; i < proposedObj.Items.Count; i++)
             {
-                AddError(ApiErrorCode.VALIDATION_FAILED, "Items", "Duplicate parts are not allowed in the items collection");
-                return;
+                if (!SeenPartIds.Contains(proposedObj.Items[i].PartId))
+                {
+                    SeenPartIds.Add(proposedObj.Items[i].PartId);
+                }
+                else
+                {
+                    AddError(ApiErrorCode.VALIDATION_NOT_UNIQUE, $"Items[{i}].PartId");
+                }
             }
 
+            // //this would be caused by an API user not our UI so no need to translation
+            // if (proposedObj.Items.GroupBy(z => z.PartId).Any(g => g.Count() > 1))
+            // {
+            //     ApiErrorCode.VALIDATION_NOT_UNIQUE
+            //     AddError(ApiErrorCode.VALIDATION_FAILED, "generalerror", "Duplicate parts are not allowed in the items collection");
+            //     return;
+            // }
+
             //Make sure there are no < 1 quantities and if there are make them 1 rather than reporting a broken rule
             //(decided this based on UI and likelyhood etc it woudl be hard to show this as a biz rule with the simple UI for it)
             foreach (var pai in proposedObj.Items)