C＃API POST调用返回404

Question

我正在尝试对本地控制器进行API调用，然后对远程服务器进行API调用。我能够点击本地，但是当我调用远程服务器时，我收到404错误作为响应。我有其他方法在第二个服务器的控制器中非常相似，工作得很好。我不知道为什么......

遥控器方法：

        // POST: api/MLSData
    [ResponseType(typeof(HttpResponseMessage))]
    [Route("MLSReport/DeleteMLSData/")]
    [HttpPost]
    public HttpResponseMessage DeleteMLSData(int id)
    {
        MLSData MLSFromDB = GenerateMLSReport.DeleteMLSData(id, db);
        if (MLSFromDB != null)
        {
            return Request.CreateResponse(HttpStatusCode.Accepted);
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.BadRequest);
        }
    }

本地控制器方法：

[ResponseType(typeof(HttpStatusCode))]
    [Route("{lang}/api/MLSReport/MLSDelete/{id}")]     
    [HttpGet]   
    public async Task<HttpStatusCode> MLSDelete(int id)
    {
        //start API call
        string baseProcessingURL = WebConfigurationManager.AppSettings["ProcessingDatabaseURL"];
        string path = " MLSReport/DeleteMLSData/";
        using (HttpClient client = new HttpClient())
        {
            client.BaseAddress = new Uri(baseProcessingURL);
            HttpResponseMessage result = await client.PostAsJsonAsync(path, id);
            return result.StatusCode;
        }
    }//end MLSDelete

每个请求的路由代码：

 public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // Web API configuration and services
        // Configuring CORS - http://www.asp.net/web-api/overview/security/enabling-cross-origin-requests-in-web-api //
        var cors = new EnableCorsAttribute("*", "Origin, Content-Type, Accept", "GET, POST, PUT, DELETE, OPTIONS");
        config.EnableCors(cors);
        // Web API routes
        config.MapHttpAttributeRoutes();

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );
    }
}