<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
  <SOAP-ENV:Header/>
  <SOAP-ENV:Body>
    <OTA_PingRS xmlns="http://www.opentravel.org/OTA/2003/05" Version="1.0" TimeStamp="2026-06-01T12:56:22+00:00" EchoToken="abc123">
    <Errors>
      <Error Type="4">Username required in SOAP Security header</Error>
    </Errors>
  </OTA_PingRS>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>