HTTP/1.1 422 Unprocessable Entity
Date: Dow, 01 Jan 2000 00:00:00 GMT
Content-Length: 158
Content-Type: text/xml; charset="utf-8"

<?xml version="1.0" ?>
<error xmlns="DAV:">
 <LOCK>
  <prop>
   <bogus-property xmlns="dav:"/>
   <contentbogosity xmlns="dav:"/>
  </prop>
 </LOCK>
</error>