diff --git a/Directory.Build.props b/Directory.Build.props
index da50def..8c0f03c 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -26,8 +26,8 @@
         <RepositoryUrl>https://github.com/managedcode/Communication</RepositoryUrl>
         <PackageProjectUrl>https://github.com/managedcode/Communication</PackageProjectUrl>
         <Product>Managed Code - Communication</Product>
-        <Version>9.6.0</Version>
-        <PackageVersion>9.6.0</PackageVersion>
+        <Version>9.6.1</Version>
+        <PackageVersion>9.6.1</PackageVersion>
 
     </PropertyGroup>
     <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">
diff --git a/ManagedCode.Communication/CollectionResultT/CollectionResultT.Fail.cs b/ManagedCode.Communication/CollectionResultT/CollectionResultT.Fail.cs
index 1f0cec3..0a208b3 100644
--- a/ManagedCode.Communication/CollectionResultT/CollectionResultT.Fail.cs
+++ b/ManagedCode.Communication/CollectionResultT/CollectionResultT.Fail.cs
@@ -33,13 +33,13 @@ public static CollectionResult<T> Fail(string title)
         var problem = Problem.Create(title, title, (int)HttpStatusCode.InternalServerError);
         return Create(false, default, 0, 0, 0, problem);
     }
-    
+
     public static CollectionResult<T> Fail(string title, string detail)
     {
         var problem = Problem.Create(title, detail);
         return Create(false, default, 0, 0, 0, problem);
     }
-    
+
     public static CollectionResult<T> Fail(string title, string detail, HttpStatusCode status)
     {
         var problem = Problem.Create(title, detail, (int)status);
@@ -50,7 +50,7 @@ public static CollectionResult<T> Fail(Exception exception)
     {
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Create(exception, (int)HttpStatusCode.InternalServerError));
     }
-    
+
     public static CollectionResult<T> Fail(Exception exception, HttpStatusCode status)
     {
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Create(exception, (int)status));
@@ -61,6 +61,26 @@ public static CollectionResult<T> FailValidation(params (string field, string me
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Validation(errors));
     }
 
+    public static CollectionResult<T> FailBadRequest()
+    {
+        var problem = Problem.Create(
+            ProblemConstants.Titles.BadRequest,
+            ProblemConstants.Messages.BadRequest,
+            (int)HttpStatusCode.BadRequest);
+
+        return Create(false, default, 0, 0, 0, problem);
+    }
+
+    public static CollectionResult<T> FailBadRequest(string detail)
+    {
+        var problem = Problem.Create(
+            ProblemConstants.Titles.BadRequest,
+            detail,
+            (int)HttpStatusCode.BadRequest);
+
+        return Create(false, default, 0, 0, 0, problem);
+    }
+
     public static CollectionResult<T> FailUnauthorized()
     {
         var problem = Problem.Create(
@@ -70,7 +90,7 @@ public static CollectionResult<T> FailUnauthorized()
 
         return Create(false, default, 0, 0, 0, problem);
     }
-    
+
     public static CollectionResult<T> FailUnauthorized(string detail)
     {
         var problem = Problem.Create(
@@ -90,7 +110,7 @@ public static CollectionResult<T> FailForbidden()
 
         return Create(false, default, 0, 0, 0, problem);
     }
-    
+
     public static CollectionResult<T> FailForbidden(string detail)
     {
         var problem = Problem.Create(
@@ -110,7 +130,7 @@ public static CollectionResult<T> FailNotFound()
 
         return Create(false, default, 0, 0, 0, problem);
     }
-    
+
     public static CollectionResult<T> FailNotFound(string detail)
     {
         var problem = Problem.Create(
@@ -125,7 +145,7 @@ public static CollectionResult<T> Fail<TEnum>(TEnum errorCode) where TEnum : Enu
     {
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Create(errorCode));
     }
-    
+
     public static CollectionResult<T> Fail<TEnum>(TEnum errorCode, string detail) where TEnum : Enum
     {
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Create(errorCode, detail));
@@ -135,9 +155,9 @@ public static CollectionResult<T> Fail<TEnum>(TEnum errorCode, HttpStatusCode st
     {
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Create(errorCode, errorCode.ToString(), (int)status));
     }
-    
+
     public static CollectionResult<T> Fail<TEnum>(TEnum errorCode, string detail, HttpStatusCode status) where TEnum : Enum
     {
         return new CollectionResult<T>(false, default, 0, 0, 0, Problem.Create(errorCode, detail, (int)status));
     }
-}
\ No newline at end of file
+}
diff --git a/ManagedCode.Communication/Constants/ProblemConstants.cs b/ManagedCode.Communication/Constants/ProblemConstants.cs
index 75f3fcb..390980d 100644
--- a/ManagedCode.Communication/Constants/ProblemConstants.cs
+++ b/ManagedCode.Communication/Constants/ProblemConstants.cs
@@ -29,6 +29,7 @@ public static class Titles
     /// </summary>
     public static class Messages
     {
+        public const string BadRequest = "The request could not be understood by the server due to malformed syntax.";
         public const string UnauthorizedAccess = "Authentication is required to access this resource.";
         public const string ForbiddenAccess = "You do not have permission to access this resource.";
         public const string ResourceNotFound = "The requested resource was not found.";
@@ -44,7 +45,7 @@ public static class Types
     {
         public const string AboutBlank = "about:blank";
         public const string ValidationFailed = "https://tools.ietf.org/html/rfc7231#section-6.5.1";
-        
+
         public static string HttpStatus(int statusCode) => $"https://httpstatuses.io/{statusCode}";
     }
 
@@ -83,7 +84,7 @@ public static class ExtensionKeys
         /// </summary>
         public const string OriginalExceptionType = "originalExceptionType";
     }
-    
+
     /// <summary>
     /// Field names for validation errors.
     /// </summary>
@@ -94,4 +95,4 @@ public static class ValidationFields
         /// </summary>
         public const string General = "_general";
     }
-}
\ No newline at end of file
+}
diff --git a/ManagedCode.Communication/Result/Result.Fail.cs b/ManagedCode.Communication/Result/Result.Fail.cs
index 4fc7f20..db9cdd6 100644
--- a/ManagedCode.Communication/Result/Result.Fail.cs
+++ b/ManagedCode.Communication/Result/Result.Fail.cs
@@ -31,7 +31,7 @@ public static Result Fail(string title)
         var problem = Problem.Create(title, title, HttpStatusCode.InternalServerError);
         return Create(false, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result with a title and detail.
     /// </summary>
@@ -40,7 +40,7 @@ public static Result Fail(string title, string detail)
         var problem = Problem.Create(title, detail, HttpStatusCode.InternalServerError);
         return Create(false, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result with a title, detail and status.
     /// </summary>
@@ -57,7 +57,7 @@ public static Result Fail(Exception exception)
     {
         return Create(false, Problem.Create(exception, (int)HttpStatusCode.InternalServerError));
     }
-    
+
     /// <summary>
     ///     Creates a failed result from an exception with specific status.
     /// </summary>
@@ -74,6 +74,32 @@ public static Result FailValidation(params (string field, string message)[] erro
         return new Result(false, Problem.Validation(errors));
     }
 
+    /// <summary>
+    ///     Creates a failed result for bad request.
+    /// </summary>
+    public static Result FailBadRequest()
+    {
+        var problem = Problem.Create(
+            ProblemConstants.Titles.BadRequest,
+            ProblemConstants.Messages.BadRequest,
+            (int)HttpStatusCode.BadRequest);
+
+        return Create(false, problem);
+    }
+
+    /// <summary>
+    ///     Creates a failed result for bad request with custom detail.
+    /// </summary>
+    public static Result FailBadRequest(string detail)
+    {
+        var problem = Problem.Create(
+            ProblemConstants.Titles.BadRequest,
+            detail,
+            (int)HttpStatusCode.BadRequest);
+
+        return Create(false, problem);
+    }
+
     /// <summary>
     ///     Creates a failed result for unauthorized access.
     /// </summary>
@@ -86,7 +112,7 @@ public static Result FailUnauthorized()
 
         return Create(false, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result for unauthorized access with custom detail.
     /// </summary>
@@ -112,7 +138,7 @@ public static Result FailForbidden()
 
         return Create(false, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result for forbidden access with custom detail.
     /// </summary>
@@ -138,7 +164,7 @@ public static Result FailNotFound()
 
         return Create(false, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result for not found with custom detail.
     /// </summary>
@@ -159,7 +185,7 @@ public static Result Fail<TEnum>(TEnum errorCode) where TEnum : Enum
     {
         return Create(false, Problem.Create(errorCode));
     }
-    
+
     /// <summary>
     ///     Creates a failed result from a custom error enum with detail.
     /// </summary>
@@ -175,12 +201,12 @@ public static Result Fail<TEnum>(TEnum errorCode, HttpStatusCode status) where T
     {
         return Create(false, Problem.Create(errorCode, errorCode.ToString(), (int)status));
     }
-    
+
     /// <summary>
     ///     Creates a failed result from a custom error enum with detail and specific HTTP status.
-    /// </summary>і 
+    /// </summary>і
     public static Result Fail<TEnum>(TEnum errorCode, string detail, HttpStatusCode status) where TEnum : Enum
     {
         return Create(false, Problem.Create(errorCode, detail, (int)status));
     }
-}
\ No newline at end of file
+}
diff --git a/ManagedCode.Communication/ResultT/ResultT.Fail.cs b/ManagedCode.Communication/ResultT/ResultT.Fail.cs
index 2161e14..76ca4bf 100644
--- a/ManagedCode.Communication/ResultT/ResultT.Fail.cs
+++ b/ManagedCode.Communication/ResultT/ResultT.Fail.cs
@@ -43,7 +43,7 @@ public static Result<T> Fail(string title)
         var problem = Problem.Create(title, title, (int)HttpStatusCode.InternalServerError);
         return Create(false, default, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result with a title and detail.
     /// </summary>
@@ -52,7 +52,7 @@ public static Result<T> Fail(string title, string detail)
         var problem = Problem.Create(title, detail);
         return Create(false, default, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result with a title, detail and status.
     /// </summary>
@@ -69,7 +69,7 @@ public static Result<T> Fail(Exception exception)
     {
         return new Result<T>(false, default, Problem.Create(exception, (int)HttpStatusCode.InternalServerError));
     }
-    
+
     /// <summary>
     ///     Creates a failed result from an exception with status.
     /// </summary>
@@ -86,6 +86,32 @@ public static Result<T> FailValidation(params (string field, string message)[] e
         return new Result<T>(false, default, Problem.Validation(errors));
     }
 
+    /// <summary>
+    ///     Creates a failed result for bad request.
+    /// </summary>
+    public static Result<T> FailBadRequest()
+    {
+        var problem = Problem.Create(
+            ProblemConstants.Titles.BadRequest,
+            ProblemConstants.Messages.BadRequest,
+            (int)HttpStatusCode.BadRequest);
+
+        return Create(false, default, problem);
+    }
+
+    /// <summary>
+    ///     Creates a failed result for bad request with custom detail.
+    /// </summary>
+    public static Result<T> FailBadRequest(string detail)
+    {
+        var problem = Problem.Create(
+            ProblemConstants.Titles.BadRequest,
+            detail,
+            (int)HttpStatusCode.BadRequest);
+
+        return Create(false, default, problem);
+    }
+
     /// <summary>
     ///     Creates a failed result for unauthorized access.
     /// </summary>
@@ -98,7 +124,7 @@ public static Result<T> FailUnauthorized()
 
         return Create(false, default, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result for unauthorized access with custom detail.
     /// </summary>
@@ -124,7 +150,7 @@ public static Result<T> FailForbidden()
 
         return Create(false, default, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result for forbidden access with custom detail.
     /// </summary>
@@ -150,7 +176,7 @@ public static Result<T> FailNotFound()
 
         return Create(false, default, problem);
     }
-    
+
     /// <summary>
     ///     Creates a failed result for not found with custom detail.
     /// </summary>
@@ -171,7 +197,7 @@ public static Result<T> Fail<TEnum>(TEnum errorCode) where TEnum : Enum
     {
         return new Result<T>(false, default, Problem.Create(errorCode));
     }
-    
+
     /// <summary>
     ///     Creates a failed result from a custom error enum with detail.
     /// </summary>
@@ -187,7 +213,7 @@ public static Result<T> Fail<TEnum>(TEnum errorCode, HttpStatusCode status) wher
     {
         return new Result<T>(false, default, Problem.Create(errorCode, errorCode.ToString(), (int)status));
     }
-    
+
     /// <summary>
     ///     Creates a failed result from a custom error enum with detail and specific HTTP status.
     /// </summary>
@@ -195,4 +221,4 @@ public static Result<T> Fail<TEnum>(TEnum errorCode, string detail, HttpStatusCo
     {
         return new Result<T>(false, default, Problem.Create(errorCode, detail, (int)status));
     }
-}
\ No newline at end of file
+}