500 Internal: Multiple actions found matching the request

AJAX

 $.ajax({
                url: '../api/TechViews/SView',
                type: 'POST',
                dataType: 'json',
                data: JSON.stringify({ Filter: JSON.stringify(eth.Data), Type: $('.productType.active').data('name'), Name: $('#txtView').val() }),
                global: false,
                contentType: "application/json; charset=utf-8",
                success: function (data) {
                   alert('success');

                },
                error: function (xhrequest, ErrorText, thrownError) {
                   alert('Fail');
                }
            });

      

        
        
        
      

    

controller

    [Route("SView")]
    [HttpPost]
    public string Post([FromBody]TechViewsModel value)
    {
        string result = string.Empty;
        return result;
    }

    [Route("DView")]
    [HttpPost]
    public string Post([FromBody]TechViewsModel value)
    {
        string result = string.Empty;
        return result;
    }

      

        
        
        
      

    

The namespace used for Route

is AttributeRouting.Web.Mvc

. On the call AJAX

I get 2 errors like500 (Internal Server Error)

• For TechViews
  
  
• For SView
  
  

and the answer "Message":"An error has occurred.","ExceptionMessage":"Multiple actions were found that match the request: \r\nSystem.String Post

RouteConfig

 public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Login", action = "LoginPage", id = UrlParameter.Optional }
        );
    }

      

        
        
        
      

    

I tried,

• Deleting HttpPost
  
  
• Re-order HttpPost
  
  andRoute
  
  
• Changing names for naming
• Delete FromBody
  
  in parameter
• Change method name and parameter type.

When I only used one post without Route

, the same code works fine.

Where am I going wrong?