testing endpoint, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Net;
using System.Net.Http;
using System.Collections.Generic;
using System.Net.Http.Headers;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
                
            string responseXML = @"
                <RVPrelimReport orderNumber=""qa3_pawRZppoxoKzXo4GF"">
  <ScheduleA>
    <Item name=""OriginatorOrderNumber"">QA3_PAWRZPPOXOKZXO4GF</Item>
    <Item name=""EffectiveDate"">11-01-2016 00:00</Item>
    <Item name=""NovaAgentName"" />
    <Item name=""OwnersPolicyAmt"" />
    <Item name=""Buyer"">LUIS LONDONO AND MARIA LONDONO</Item>
    <Item name=""LoanPolicyAmt"">193,935.00</Item>
    <Item name=""Lender"">TBD</Item>
    <Item name=""VestingDeed"">LUIS E. LONDONO AND MARIA I. LONDONO, HUSBAND AND WIFE AS JOINT TENANTS WITH RIGHTS OF SURVIVORSHIP</Item>
    <Item name=""EstateType"">FEE SIMPLE</Item>
    <Item name=""LegalDescription"">A CERTAIN TRACT OR PARCEL OF LAND, WITH THE BUILDINGS THEREON, SITUATED ON THE EASTERLY SIDE OF GRAY STREET AND THE SOUTHERLY SIDE OF GILLIS STREET, IN SAID NASHUA, HILLSBOROUGH COUNTY, STATE OF NEW HAMPSHIRE, BOUNDED AND DESCRIBED AS FOLLOWS:
BEGINNING AT THE NORTHWEST CORNER OF THE PREMISES AT A STONE BOUND AT THE CORNER OF GRAY AND GILLIS STREETS;
1. SOUTHERLY ON SAID GRAY STREET 50 FEET, MORE OR LESS, TO LAND FORMERLY OF THE GRANTOR AND NOW OR FORMERLY OF ULRIC PINCINCE;
2. EASTERLY BY SAID PINCINCE LAND 75 FEET TO LAND NOW OR FORMERLY OF REYNOLDS;
3. NORTHERLY 50 FEET ON SAID REYNOLDS LAND TO A STONE BOUND AT SAID GILLIS STREET;
4. WESTERLY ON SAID GILLIS STREET 75 FEET TO THE PLACE OF BEGINNING.
APN: 0027-00061
BEING THE SAME PROPERTY CONVEYED FROM MAURICE DICHARD AND ANNIE B. DICHARD, HUSBAND AND WIFE, THE GRANTOR(S), TO LUIS E. LONDONO AND MARIA I. LONDONO, HUSBAND AND WIFE AS JOINT TENANTS WITH RIGHTS OF SURVIVORSHIP, THE GRANTEE(S), BY DEED DATED 11/20/2008, AND RECORDED 11/24/2008 AS BOOK: 8035 PAGE: 2091.</Item>
  </ScheduleA>
  <CourthouseRecords>
    <Deeds />
    <Mortgages />
    <GeneralInstruments />
  </CourthouseRecords>
  <Requirements>
    <Requirement code=""RMTGJB"">
      <Phrase>Mortgage from LUIS LONDONO AND MARIA LONDONO to TBD, encumbering the land in the amount shown on Schedule A hereof.

NOTE: Spouse of individual(s), if any, to join in the above required instrument(s) OR the Document must state that captioned property is not the homestead of the grantor/mortgagor.</Phrase>
      <keyword name=""Mortgagor"">LUIS LONDONO AND MARIA LONDONO</keyword>
      <keyword name=""Mortgagee"">TBD</keyword>
    </Requirement>
    <Requirement code=""BLANK"">
      <Phrase>Cancellation or disposition of mortgage made by Luis E. Londono and Maria I. Londono, to Mortgage Electronic Registration Systems, Inc., as nominee for Bank of America, N.A., dated 10/26/2009, recorded 10/30/2009 in Mortgage Book 8148, Page 1045, in the Registry of Deeds of the County of Hillsborough, in the originally stated amount of $ 223,376.00.
Said Mortgage was assigned to Bank of America, by Assignment recorded on 10/09/2012 in Book 8479 page 2847.
Said Mortgage was further assigned to Nationstar Mortgage LLC, by Assignment recorded on 02/05/2013 in Book 8524 page 2299.
No intervening Assignment of Mortgage appears of record from Mortgage Electronic Registration Systems, Inc., as nominee for Bank of America, N.A. to Bank of America.  A correction/intervening Assignment is required to correct the mortgage chain.

</Phrase>
    </Requirement>
  </Requirements>
  <Exceptions />
  <Notes />
  <Taxes />
  <Bundles>
    <Bundle Url=""http://test.redvision.com/titlevision/DocHandler.ashx?GADSDocumentId=772942d3-2f94-486e-a876-f45b8f94b083"" />
  </Bundles>
</RVPrelimReport>";
            using (HttpClient client = new HttpClient())
            {
                client.BaseAddress = new Uri("https://qa-redvision.qualia.io");
                client.DefaultRequestHeaders.Authorization = 
                    new AuthenticationHeaderValue (
                        "Basic", 
                        Convert.ToBase64String(
                            System.Text.ASCIIEncoding.ASCII.GetBytes(
                                string.Format("{0}:{1}", "redvision", "redvision1")
                            )
                        )
                );
                var content = new FormUrlEncodedContent(new[] 
                {
                    new KeyValuePair<string, string>("responseXML", responseXML)
                });
                var result = client.PostAsync("/push_response", content).Result;
                
                string resultContent = result.Content.ReadAsStringAsync().Result;
                Console.WriteLine(resultContent);
            }
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,16 sec, absolute running time: 1,75 sec, cpu time: 0,81 sec, average memory usage: 30 Mb, average nr of threads: 14