diff --git a/Harmony.AspNetCore/Harmony.AspNetCore.synproj b/Harmony.AspNetCore/Harmony.AspNetCore.synproj
index 15f2ce94..9a81bb77 100644
--- a/Harmony.AspNetCore/Harmony.AspNetCore.synproj
+++ b/Harmony.AspNetCore/Harmony.AspNetCore.synproj
@@ -38,10 +38,12 @@
     <OutputPath>bin\AnyCPU\ReleaseNuget\</OutputPath>
   </PropertyGroup>
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core">
+      <Version>2.2.5</Version>
+    </PackageReference>
     <PackageReference Include="Synergex.SynergyDE.Build" Version="11.1.1010.2674" />
     <PackageReference Include="Synergex.SynergyDE.synrnt" Version="11.1.1010" />
     <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
-    <PackageReference Include="Synergex.SynergyDE.synrnt" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.6.0" />
   </ItemGroup>
   <ItemGroup>
@@ -50,6 +52,7 @@
     <Compile Include="AspNetCoreDebugLogger.dbl" />
     <Compile Include="Context\IMultiTenantMiddleware.dbl" />
     <Compile Include="MultiTenantProvider.dbl" />
+    <Compile Include="ValidationHelper.dbl" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\HarmonyCore\HarmonyCore.synproj">
diff --git a/Harmony.AspNetCore/ValidationHelper.dbl b/Harmony.AspNetCore/ValidationHelper.dbl
new file mode 100644
index 00000000..bad7683e
--- /dev/null
+++ b/Harmony.AspNetCore/ValidationHelper.dbl
@@ -0,0 +1,31 @@
+import System
+import System.Collections.Generic
+import System.Text
+import Microsoft.AspNetCore.Mvc
+import Microsoft.AspNetCore.Mvc.ModelBinding
+
+namespace Harmony.AspNetCore
+
+	public class ValidationHelper
+	
+		public static method ReturnValidationError, @IActionResult
+			state, @ModelStateDictionary
+		proc
+			data errorText = new List<String>()
+			data errorPair, @KeyValuePair<string, ModelStateEntry>
+			
+			foreach errorPair in state
+			begin
+				data errorValue, @ModelError
+				foreach errorValue in errorPair.Value.Errors
+				begin
+					errorText.Add(errorValue.ErrorMessage)
+				end
+			end
+
+			mreturn new BadRequestObjectResult(string.Join(%char(13) + %char(10), errorText))
+		endmethod
+
+	endclass
+
+endnamespace
diff --git a/Services.Controllers/CustomerNotesController.dbl b/Services.Controllers/CustomerNotesController.dbl
index ca93c84b..e0d3aa7c 100644
--- a/Services.Controllers/CustomerNotesController.dbl
+++ b/Services.Controllers/CustomerNotesController.dbl
@@ -21,6 +21,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import Services.Models
 
@@ -129,7 +130,7 @@ namespace Services.Controllers
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -144,7 +145,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -166,7 +167,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
             aCustomerNote.CustomerNumber = aCustomerNumber
@@ -195,7 +196,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -215,7 +216,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing customerNote
             try
@@ -244,7 +245,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
diff --git a/Services.Controllers/CustomersController.dbl b/Services.Controllers/CustomersController.dbl
index 44f56515..b1cc220b 100644
--- a/Services.Controllers/CustomersController.dbl
+++ b/Services.Controllers/CustomersController.dbl
@@ -21,6 +21,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import Services.Models
 
@@ -360,7 +361,7 @@ namespace Services.Controllers
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -375,7 +376,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -397,7 +398,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
             aCustomer.CustomerNumber = aCustomerNumber
@@ -426,7 +427,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -446,7 +447,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing customer
             try
@@ -475,7 +476,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
diff --git a/Services.Controllers/ItemsController.dbl b/Services.Controllers/ItemsController.dbl
index 8ac0cc82..97b9daf9 100644
--- a/Services.Controllers/ItemsController.dbl
+++ b/Services.Controllers/ItemsController.dbl
@@ -21,6 +21,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import Services.Models
 
@@ -521,7 +522,7 @@ namespace Services.Controllers
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -536,7 +537,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -558,7 +559,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
             aItem.ItemNumber = aItemNumber
@@ -587,7 +588,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -607,7 +608,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing item
             try
@@ -636,7 +637,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
diff --git a/Services.Controllers/OrderItemsController.dbl b/Services.Controllers/OrderItemsController.dbl
index 77a01c42..5d1d26c7 100644
--- a/Services.Controllers/OrderItemsController.dbl
+++ b/Services.Controllers/OrderItemsController.dbl
@@ -21,6 +21,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import Services.Models
 
@@ -254,7 +255,7 @@ namespace Services.Controllers
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -269,7 +270,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -294,7 +295,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
             aOrderItem.OrderNumber = aOrderNumber
@@ -324,7 +325,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -347,7 +348,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing orderItem
             try
@@ -376,7 +377,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
diff --git a/Services.Controllers/OrdersController.dbl b/Services.Controllers/OrdersController.dbl
index b47a0fa9..24e6b1bc 100644
--- a/Services.Controllers/OrdersController.dbl
+++ b/Services.Controllers/OrdersController.dbl
@@ -21,6 +21,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import Services.Models
 
@@ -252,7 +253,7 @@ namespace Services.Controllers
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -267,7 +268,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -289,7 +290,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
             aOrder.OrderNumber = aOrderNumber
@@ -318,7 +319,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -338,7 +339,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing order
             try
@@ -367,7 +368,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
diff --git a/Services.Controllers/VendorsController.dbl b/Services.Controllers/VendorsController.dbl
index 9c63b7f2..691b5d20 100644
--- a/Services.Controllers/VendorsController.dbl
+++ b/Services.Controllers/VendorsController.dbl
@@ -21,6 +21,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import Services.Models
 
@@ -306,7 +307,7 @@ namespace Services.Controllers
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -321,7 +322,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -343,7 +344,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
             aVendor.VendorNumber = aVendorNumber
@@ -372,7 +373,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -392,7 +393,7 @@ namespace Services.Controllers
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing vendor
             try
@@ -421,7 +422,7 @@ namespace Services.Controllers
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
diff --git a/Templates/ODataController.tpl b/Templates/ODataController.tpl
index eba644b1..077e7a26 100644
--- a/Templates/ODataController.tpl
+++ b/Templates/ODataController.tpl
@@ -61,6 +61,7 @@ import System.ComponentModel.DataAnnotations
 import Harmony.Core.EF.Extensions
 import Harmony.Core.Interface
 import Harmony.OData
+import Harmony.AspNetCore
 import Newtonsoft.Json
 import <MODELS_NAMESPACE>
 
@@ -421,7 +422,7 @@ namespace <NAMESPACE>
 
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Get the next available primary key value
             disposable data keyFactory = (@IPrimaryKeyFactory)_ServiceProvider.GetService(^typeof(IPrimaryKeyFactory))
@@ -436,7 +437,7 @@ namespace <NAMESPACE>
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -499,7 +500,7 @@ namespace <NAMESPACE>
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Ensure that the key values in the URI win over any data that may be in the model object
     <IF STRUCTURE_ISAM>
@@ -541,7 +542,7 @@ namespace <NAMESPACE>
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry
 
@@ -602,7 +603,7 @@ namespace <NAMESPACE>
         proc
             ;; Validate inbound data
             if (!ModelState.IsValid)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
 
             ;;Patch the existing <structureNoplural>
             try
@@ -631,7 +632,7 @@ namespace <NAMESPACE>
             catch (e, @ValidationException)
             begin
                 ModelState.AddModelError("RelationValidation",e.Message)
-                mreturn BadRequest(ModelState)
+                mreturn ValidationHelper.ReturnValidationError(ModelState)
             end
             endtry