public HttpResponseMessage ValidateTokenId(string tokenID, string cardtype)
        {
            string         customerVaultId = "";
            string         ccexp           = "";
            string         ccnumber        = "";
            XmlDocument    xmlRequest      = new XmlDocument();
            XmlDeclaration xmlDecl         = xmlRequest.CreateXmlDeclaration("1.0", "UTF-8", "yes");
            XmlElement     root            = xmlRequest.DocumentElement;

            xmlRequest.InsertBefore(xmlDecl, root);
            XmlElement xmlCompleteTransaction = xmlRequest.CreateElement("complete-action");
            XmlElement xmlApiKey = xmlRequest.CreateElement("api-key");

            xmlApiKey.InnerText = ConfigurationManager.AppSettings["CardflexApikey"];
            xmlCompleteTransaction.AppendChild(xmlApiKey);
            XmlElement xmlTokenId = xmlRequest.CreateElement("token-id");

            xmlTokenId.InnerText = tokenID;
            xmlCompleteTransaction.AppendChild(xmlTokenId);
            xmlRequest.AppendChild(xmlCompleteTransaction);
            string      responseFromServer = _bankService.sendXMLRequest(xmlRequest);
            XmlReader   responseReader     = XmlReader.Create(new StringReader(responseFromServer));
            XmlDocument xDoc = new XmlDocument();

            xDoc.Load(responseReader);
            XmlNodeList response     = xDoc.GetElementsByTagName("result");
            XmlNodeList responseText = xDoc.GetElementsByTagName("result-text");

            responseReader.Close();

            if (response[0].InnerText.Equals("1"))
            {
                XmlNodeList VaultId  = xDoc.GetElementsByTagName("customer-vault-id");
                XmlNodeList xmlccexp = xDoc.GetElementsByTagName("cc-exp");
                XmlNodeList CCNumber = xDoc.GetElementsByTagName("cc-number");
                customerVaultId = VaultId[0].InnerText;
                ccexp           = xmlccexp[0].InnerText;
                ccnumber        = (CCNumber[0].InnerText.Length > 3) ? CCNumber[0].InnerText.Substring(CCNumber[0].InnerText.Length - 4, 4) : CCNumber[0].InnerText;
                ccnumber        = "************" + ccnumber;
                _bankService.AddCreditCardDetails(customerVaultId, ccexp, ccnumber, cardtype);
            }
            else
            {
                throw new InvalidParameterException("Invalid Credit Card Information.");
            }
            return(Request.CreateResponse(HttpStatusCode.OK, true));
        }