Certificate problem on https

Hi,
I faced with certificate read problem at .NET side. The program is that HttpListener Context cannot resolve the certificate that has been sent through XI. Please find the problematic source code, below.
            try
                Console.WriteLine("Listening...");
                listener.Start();
                listener.AuthenticationSchemes = AuthenticationSchemes.Anonymous;
                while (true)
                    // Note: The GetContext method blocks while waiting for a request.
                    <b>HttpListenerContext context = listener.GetContext();</b>
System is waiting for request where I determined bold font in source code. The code is running actually, because some ceritifcates are passing and reading by listener context, but not SAP certificate. I created client side SSL certificate. Isn't it enough ? Can anybody have a suggestion?
Thank You

I solved the problem

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