Hello, I post twice for a bank, I post it as xml in the first post process and I have to post the incoming data in 3d again, but when I do the first post, it drops directly on the paid page and does not go to the 3d payment page. Is there anyone to help with this?

My first Post ethic is as follows

    Dictionary<string, string> httpParameters = new Dictionary<string, string>();
                httpParameters.Add("xmldata", requestXml);
                HttpResponseMessage response = await httpClient.PostAsync(_ThreeDPaymentPaymentSettings.VerifyUrl, new FormUrlEncodedContent(httpParameters));
                string responseContent = await response.Content.ReadAsStringAsync();

                XmlDocument xmlDocument = new XmlDocument();
                xmlDocument.LoadXml(responseContent);