title: 401 Unauthorized on SOAP UI on REST API POST request
body: <p>I am new to SOAP UI , but I am getting</p>
  <pre><code>401 Unauthorized response
  </code></pre>
  <p>for Post Request. My Application is VPN based (HTTPS) and I have passed authentication via token or Basic authentication but nothing worked.</p>
  <p><img src="https://i.stack.imgur.com/PAT63.png" alt="enter image description here" /></p>
  <pre><code>HTTP/1.1 401 Unauthorized
  Date: Mon, 13 Jul 2020 19:26:37 GMT
  Content-Type: text/html
  Content-Length: 172
  Connection: keep-alive
  </code></pre>
  <p>HTML code:</p>
  <pre><code>&lt;html&gt;
      &lt;head&gt;&lt;title&gt;401 Authorization Required&lt;/title&gt;&lt;/head&gt;
      &lt;body&gt;
          &lt;center&gt;&lt;h1&gt;401 Authorization Required&lt;/h1&gt;&lt;/center&gt;
          &lt;hr&gt;&lt;center&gt;nginx&lt;/center&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  <p>SOAP UI LOGS:</p>
  <p>Tue Jul 14 00:56:37 IST 2020:DEBUG:Stale connection check
  Tue Jul 14 00:56:37 IST 2020:DEBUG:Attempt 1 to execute request
  Tue Jul 14 00:56:37 IST 2020:DEBUG:Sending request: POST /ace/api/parameters/ HTTP/1.1
  Tue Jul 14 00:56:37 IST 2020:DEBUG:Receiving response: HTTP/1.1 401 Unauthorized
  Tue Jul 14 00:56:37 IST 2020:DEBUG:Connection can be kept alive indefinitely
  Tue Jul 14 00:56:37 IST 2020:DEBUG:Target requested authentication
  Tue Jul 14 00:56:37 IST 2020:WARN:Authentication error: Unable to respond to any of these challenges: {}
  Tue Jul 14 00:56:38 IST 2020:INFO:Got response for [https://slrs01vb1ddsv03.as.ad.XXX.XXX.com.:Request 1] in 362ms (172 bytes)
  Tue Jul 14 00:57:10 IST 2020:DEBUG:Connection closed</p>