diff --git a/src/Radical.Windows.Tests/API/APIApprovals.Approve_API.approved.txt b/src/Radical.Windows.Tests/API/APIApprovals.Approve_API.approved.txt
index cef78448..747d2558 100644
--- a/src/Radical.Windows.Tests/API/APIApprovals.Approve_API.approved.txt
+++ b/src/Radical.Windows.Tests/API/APIApprovals.Approve_API.approved.txt
@@ -3312,7 +3312,7 @@ namespace Radical.Windows.Model
 }
 namespace Radical.Windows.Presentation
 {
-    public abstract class AbstractMementoViewModel : Radical.Model.MementoEntity, Radical.Windows.ComponentModel.IViewModel, System.ComponentModel.INotifyPropertyChanged
+    public abstract class AbstractMementoViewModel : Radical.Model.MementoEntity, Radical.Windows.ComponentModel.IRequireValidation, Radical.Windows.ComponentModel.IViewModel, System.ComponentModel.INotifyDataErrorInfo, System.ComponentModel.INotifyPropertyChanged
     {
         protected AbstractMementoViewModel() { }
         protected AbstractMementoViewModel(Radical.ComponentModel.ChangeTracking.ChangeTrackingRegistration registration) { }
@@ -3376,7 +3376,7 @@ namespace Radical.Windows.Presentation
                 "Errors"})]
         protected virtual System.ValueTuple<bool, System.Collections.Generic.IEnumerable<Radical.Validation.ValidationError>> ValidateProperty(string propertyName, Radical.Windows.ComponentModel.ValidationBehavior behavior) { }
     }
-    public abstract class AbstractViewModel : Radical.Model.Entity, Radical.Windows.ComponentModel.IViewModel, System.ComponentModel.INotifyPropertyChanged, System.ComponentModel.ISupportInitialize
+    public abstract class AbstractViewModel : Radical.Model.Entity, Radical.Windows.ComponentModel.IRequireValidation, Radical.Windows.ComponentModel.IViewModel, System.ComponentModel.INotifyDataErrorInfo, System.ComponentModel.INotifyPropertyChanged, System.ComponentModel.ISupportInitialize
     {
         protected AbstractViewModel() { }
         protected Radical.Windows.ComponentModel.ValidationBehavior DefaultValidationBehavior { get; set; }
diff --git a/src/Radical.Windows.Tests/Presentation/AbstractMementoViewModelTests.cs b/src/Radical.Windows.Tests/Presentation/AbstractMementoViewModelTests.cs
index 88666a11..8c99a426 100644
--- a/src/Radical.Windows.Tests/Presentation/AbstractMementoViewModelTests.cs
+++ b/src/Radical.Windows.Tests/Presentation/AbstractMementoViewModelTests.cs
@@ -266,7 +266,7 @@ public void AbstractMementoViewModel_PropertyChanged_is_raised_GetErrors_should_
             };
 
             sut.ValidateUsing(
-                new DataAnnotationValidationService<SampleTestMementoViewModel>(sut));
+                new DataAnnotationValidationService<SampleTestMementoViewModel>(sut), false);
             sut.NotNullNotEmpty = "";
 
             Assert.IsNotNull(errors);
diff --git a/src/Radical.Windows.Tests/Presentation/AbstractViewModelTests.cs b/src/Radical.Windows.Tests/Presentation/AbstractViewModelTests.cs
index 082528ae..454171f3 100644
--- a/src/Radical.Windows.Tests/Presentation/AbstractViewModelTests.cs
+++ b/src/Radical.Windows.Tests/Presentation/AbstractViewModelTests.cs
@@ -200,7 +200,7 @@ public void AbstractViewModel_PropertyChanged_is_raised_GetErrors_should_contain
             };
 
             sut.ValidateUsing(
-                new DataAnnotationValidationService<SampleTestViewModel>(sut));
+                new DataAnnotationValidationService<SampleTestViewModel>(sut), false);
             sut.NotNullNotEmpty = "";
 
             Assert.IsNotNull(errors);
diff --git a/src/Radical.Windows/Presentation/AbstractMementoViewModel.cs b/src/Radical.Windows/Presentation/AbstractMementoViewModel.cs
index d433818d..c02b534d 100644
--- a/src/Radical.Windows/Presentation/AbstractMementoViewModel.cs
+++ b/src/Radical.Windows/Presentation/AbstractMementoViewModel.cs
@@ -19,7 +19,8 @@ namespace Radical.Windows.Presentation
     /// </summary>
     public abstract class AbstractMementoViewModel :
         MementoEntity,
-        IViewModel
+        IViewModel,
+        IRequireValidation
     {
         /// <summary>
         /// Gets or sets the view. The view property is intended only for
@@ -76,11 +77,7 @@ protected virtual bool SkipPropertyValidation(string propertyName)
         [SkipPropertyValidation]
         protected virtual bool IsValidationEnabled
         {
-            get
-            {
-                return this is INotifyDataErrorInfo
-                    || this is IRequireValidation;
-            }
+            get{ return true; }
         }
 
         IValidationService _validationService;
@@ -132,7 +129,7 @@ protected string GetPropertyDisplayName(string propertyName)
         /// </returns>
         protected virtual (bool IsValid, IEnumerable<ValidationError> Errors) ValidateProperty(string propertyName, ValidationBehavior behavior)
         {
-            (bool IsValid, IEnumerable<ValidationError> Errors) validationResult = (true, new ValidationError[0]);
+            (bool IsValid, IEnumerable<ValidationError> Errors) validationResult = (true, Array.Empty<ValidationError>());
             if (ValidationService.IsValidationSuspended)
             {
                 return validationResult;
@@ -205,7 +202,7 @@ protected virtual (bool IsValid, IEnumerable<ValidationError> Errors) ValidatePr
         {
             if (ValidationService.IsValidationSuspended)
             {
-                return (true, new ValidationError[0]);
+                return (true, Array.Empty<ValidationError>());
             }
 
             var wasValid = IsValid;
diff --git a/src/Radical.Windows/Presentation/AbstractViewModel.cs b/src/Radical.Windows/Presentation/AbstractViewModel.cs
index 884148ac..53d9da78 100644
--- a/src/Radical.Windows/Presentation/AbstractViewModel.cs
+++ b/src/Radical.Windows/Presentation/AbstractViewModel.cs
@@ -19,7 +19,8 @@ namespace Radical.Windows.Presentation
     public abstract class AbstractViewModel :
         Entity,
         IViewModel,
-        ISupportInitialize
+        ISupportInitialize,
+        IRequireValidation
     {
         /// <summary>
         /// Gets or sets the view. The view property is intended only for
@@ -76,11 +77,7 @@ protected virtual bool SkipPropertyValidation(string propertyName)
         [SkipPropertyValidation]
         protected virtual bool IsValidationEnabled
         {
-            get
-            {
-                return this is INotifyDataErrorInfo
-                    || this is IRequireValidation;
-            }
+            get{ return true; }
         }
 
         IValidationService _validationService;
@@ -129,7 +126,7 @@ protected string GetPropertyDisplayName(string propertyName)
         /// </returns>
         protected virtual (bool IsValid, IEnumerable<ValidationError> Errors) ValidateProperty(string propertyName, ValidationBehavior behavior)
         {
-            (bool IsValid, IEnumerable<ValidationError> Errors) validationResult = (true, new ValidationError[0]);
+            (bool IsValid, IEnumerable<ValidationError> Errors) validationResult = (true, Array.Empty<ValidationError>());
             if (ValidationService.IsValidationSuspended)
             {
                 return validationResult;
@@ -223,7 +220,7 @@ public virtual (bool IsValid, IEnumerable<ValidationError> Errors) Validate(Vali
         {
             if (ValidationService.IsValidationSuspended)
             {
-                return (true, new ValidationError[0]);
+                return (true, Array.Empty<ValidationError>());
             }
 
             var wasValid = IsValid;
diff --git a/src/Radical.Windows/Validation/AbstractValidationService.cs b/src/Radical.Windows/Validation/AbstractValidationService.cs
index e45451f8..a1cb82fc 100644
--- a/src/Radical.Windows/Validation/AbstractValidationService.cs
+++ b/src/Radical.Windows/Validation/AbstractValidationService.cs
@@ -23,7 +23,7 @@ public abstract class AbstractValidationService : IValidationService
         {
             if (IsValidationSuspended)
             {
-                return (true, new ValidationError[0]);
+                return (true, Array.Empty<ValidationError>());
             }
 
             var results = OnValidateProperty(propertyName);
@@ -41,7 +41,7 @@ protected virtual IEnumerable<ValidationError> OnValidateProperty(string propert
         {
             if (IsValidationSuspended) 
             {
-                return new ValidationError[0];
+                return Array.Empty<ValidationError>();
             }
 
             /*
@@ -64,7 +64,7 @@ protected virtual IEnumerable<ValidationError> OnValidateProperty(string propert
         {
             if (IsValidationSuspended)
             {
-                return (true, new ValidationError[0]);
+                return (true, Array.Empty<ValidationError>());
             }
 
             //var wasValidBeforeValidation = IsValid;
diff --git a/src/Radical.Windows/Validation/NullValidationService.cs b/src/Radical.Windows/Validation/NullValidationService.cs
index 1df39d0d..d8405679 100644
--- a/src/Radical.Windows/Validation/NullValidationService.cs
+++ b/src/Radical.Windows/Validation/NullValidationService.cs
@@ -20,10 +20,10 @@ public sealed class NullValidationService : AbstractValidationService
         private NullValidationService()
             : base()
         {
-
+            SuspendValidation();
         }
 
-        private static readonly ValidationError[] emptyErrors = new ValidationError[0];
+        private static readonly ValidationError[] emptyErrors = System.Array.Empty<ValidationError>();
 
         /// <summary>
         /// Called in order to execute the concrete validation process.