private HttpWebRequest CreateSOAPWebRequest()
        {
            //Making Web Request
            HttpWebRequest Req = (HttpWebRequest)WebRequest.Create(RequestUri);

            //SOAPAction
            Req.Headers.Add($@"SOAPAction:{SoapAction}");
            //Content_type
            Req.ContentType = "text/xml;charset=\"utf-8\"";
            Req.Accept      = "text/xml";
            //HTTP method
            Req.Method = "POST";
            if (RequestUri.Contains("https"))
            {
                Req.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;
            }
            //return HttpWebRequest
            return(Req);
        }