diff --git a/README.md b/README.md
index 7e2ec26..f0b026f 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ This library is an ad hoc code customization used in my private/work projects th
 | 403 | Exception.ForbiddenException | Response.Forbidden | available |
 | 404 | Exception.NotFoundException | Response.NotFound | available |
 | 405 | Exception.NotAllowedException | Response.MethodNotAllowed | available |
-| 406 | Exception.NotAcceptableException | Response.NotAcceptable | coming soon |
+| 406 | Exception.NotAcceptableException | Response.NotAcceptable | available |
 | 408 | Exception.RequestTimeoutException | Response.RequestTimeout | coming soon |
 | 409 | Exception.ConflictException | Response.Conflict | coming soon |
 | 422 | Exception.UnprocessableEntityException | Response.UnprocessableEntity | coming soon |
diff --git a/src/CustomLibrary.ProblemDetails/Exception/NotAcceptableException.cs b/src/CustomLibrary.ProblemDetails/Exception/NotAcceptableException.cs
new file mode 100644
index 0000000..6206489
--- /dev/null
+++ b/src/CustomLibrary.ProblemDetails/Exception/NotAcceptableException.cs
@@ -0,0 +1,16 @@
+namespace CustomLibrary.ProblemDetails.Exception;
+
+public class NotAcceptableException : System.Exception
+{
+    public NotAcceptableException()
+    {
+    }
+
+    public NotAcceptableException(string message) : base(message)
+    {
+    }
+
+    public NotAcceptableException(string message, System.Exception innerException) : base(message, innerException)
+    {
+    }
+}
\ No newline at end of file
diff --git a/src/CustomLibrary.ProblemDetails/Response/Response.cs b/src/CustomLibrary.ProblemDetails/Response/Response.cs
index 9c0859d..90e3cd0 100644
--- a/src/CustomLibrary.ProblemDetails/Response/Response.cs
+++ b/src/CustomLibrary.ProblemDetails/Response/Response.cs
@@ -133,4 +133,26 @@ public static ObjectResult MethodNotAllowed(HttpContext httpContext, System.Exce
 
         return result;
     }
+
+    public static ObjectResult NotAcceptable(HttpContext httpContext, System.Exception exc)
+    {
+        var statusCode = StatusCodes.Status406NotAcceptable;
+        var problemDetails = new CustomProblemDetails
+        {
+            Status = statusCode,
+            Type = $"https://httpstatuses.com/{statusCode}",
+            Instance = httpContext.Request.Path,
+            Title = "NotAcceptable"
+        };
+
+        problemDetails.Extensions.Add("traceId", Activity.Current?.Id ?? httpContext.TraceIdentifier);
+        problemDetails.Extensions.Add("errors", exc.Message);
+
+        var result = new ObjectResult(problemDetails)
+        {
+            StatusCode = statusCode
+        };
+
+        return result;
+    }
 }
\ No newline at end of file