<?xml version="1.0" encoding="UTF-8"?>
<result/>

<?xml version="1.0" encoding="UTF-8"?>
<result>
  <param name="java.version">1.4.1_02</param>
  <param name="xins.version">1.0.0</param>
  <param name="xmlenc.version">0.43</param>
</result>

<?xml version="1.0" encoding="UTF-8"?>
<result>
  <param name="startup">2004.11.30 07:08:13.296</param>
  <param name="availableProcessors">1</param>
  <param name="now">2004.12.07 14:31:51.559</param>
  <data>
    <heap total="531628032" used="80881976" free="450746056" max="603979776"/>
  </data>
</result>

If the error code starts with an underscore, the error code is a standard error code.

<?xml version="1.0" encoding="UTF-8"?>
<result errorcode="_InvalidRequest">
  <data>
    <missing-param param="zipcode"/>
  </data>
</result>

<?xml version="1.0" encoding="UTF-8"?>
<result errorcode="UnknownSessionID"/>

<?xml version="1.0" encoding="UTF-8"?>
<result errorcode="BackendFailure">
  <param name="number">11</param>
</result>