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MVC3 - a complex model, properties have the same field name, unable to display the model

I need help rendering a complex model.

I have a complex model with 2 class properties. All 3 classes (AddProjectQnrModel, ProjectModel, QTModel) have the GroupId and GroupName properties.

public class AddProjectQnrModel
    {
        [Required]
        public int GroupId { get; set; }

        public string GroupName { get; set; }

        public ProjectModel Project { get; set; }

        public QCTModel QCT { get; set; }
    }

In the view, I use editor templates:

@Html.EditorFor(x => x.Project, "_EditProject.cshtml")
@Html.EditorFor(x => x.QCT, "_QCT-v1.cshtml")

I cannot use @ html.Partial since it will not bind properties correctly, so I have to use editor templates.

When starting a project, I get this error:

Validation type names in unobtrusive client validation rules must be unique. The following type of check has been viewed more than once: required

Description: An unhandled exception occurred during the execution of the current web request. View the stack trace for error information and where it originated in the code.

: System.InvalidOperationException: . :

Source Error: 

Line 26: 
Line 27:         @Html.EditorFor(x => x.Project, "_EditProject.cshtml")
Line 28: 
Line 29:
+5
1

, - .

MVC GroupId, int . [Required], . [Required] , , , .

, [Required], Application_Start, :

DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false
+6

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