Why do not all the variables pass through the GET method in C #?

I have the following driver to receive parameters by get

I send my url as link

public ActionResult UsarCode(string rmail, string rcompany, string raddress, string rpais, string rtel, string rhash, string ridpalpay, string rpriority, string idproduct)
        {
            using (ArcsaEntities ctx = new ArcsaEntities())
            {
                var pack = ctx.SalesArcsaReportsPakages.Where(p => p.hass == rhash).FirstOrDefault();
                if (pack.hass == rhash && pack.status == true)
                {
                    SalesARCSASearchFront searchFront = new SalesARCSASearchFront();

                    searchFront.fkSalesPayPal = Convert.ToInt32(ridpalpay);
                    searchFront.CorreoElectronico = rmail;
                    searchFront.Query = rcompany;
                    searchFront.Telefono = rtel;
                    searchFront.Direccion = raddress;
                    searchFront.fkProductARCSA = 2;
                    searchFront.fkCountry = Convert.ToInt32(rpais);
                    searchFront.CreatAt = DateTime.Now;
                    searchFront.UpdateAt = DateTime.Now;
                    ctx.SalesARCSASearchFront.Add(searchFront);
                    ctx.SaveChanges();

                    string uri = "http://189.240.112.242/arcsaws/arcsausa.asmx/OrderOfflineARCSAusa?key=S232Q334K320U314Q302L328S200X214O198O196I198B196P170&TypeOfReport=2&idSearchFrontARCSA=" + searchFront.Id;
                    var request = WebRequest.Create(uri) as HttpWebRequest;
                    var response = request.GetResponse();

                    Stream receiveStream = response.GetResponseStream();
                    StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);

                    var resultadoweb = readStream.ReadToEnd();
                    //Create the XmlDocument.
                    XmlDocument xmlDoc = new XmlDocument();
                    xmlDoc.LoadXml(resultadoweb);
                    XmlNodeList elemlist = xmlDoc.GetElementsByTagName("Result");
                    XmlNodeList elemlist2 = xmlDoc.GetElementsByTagName("IdReport");
                    string suc = elemlist[0].InnerXml;
                    string reporte = elemlist2[0].InnerXml;
                    var insertfkreport = ctx.SalesARCSASearchFront.Where(i => i.Id == searchFront.Id).FirstOrDefault();
                    insertfkreport.fkReport = Convert.ToInt32(reporte);
                    ctx.SaveChanges();

                    RequestedReportsARCSA requesteReport = new RequestedReportsARCSA();
                    requesteReport.CreatedDate = DateTime.Now;
                    requesteReport.fkSalesArcsaReportsPakage = pack.id;
                    requesteReport.Telefono = rtel;
                    requesteReport.Direccion = raddress;
                    requesteReport.Company = rcompany;
                    requesteReport.fkCountry = Convert.ToInt32(rpais);
                    ctx.RequestedReportsARCSA.Add(requesteReport);
                    ctx.SaveChanges();

                    var Conteo = ctx.RequestedReportsARCSA.Where(c => c.fkSalesArcsaReportsPakage == pack.id).Count();
                    if (Conteo == pack.Quantity)
                    {
                        pack.status = false;
                        ctx.SaveChanges();
                    }
                    ViewBag.Reporte = reporte;
                    ViewBag.Email = rmail;

                    return View("~/Views/Sales/Congratulations_2.cshtml");
                }
                return Content("Error de procesamiento 701");
            }
        }

I put a breakpoint but only certain variables arrive like email rhash but the others do not take them, someone could explain me why, thanks