HTTP/1.1 406 Not Acceptable
Date: Dow, 01 Jan 2000 00:00:00 GMT
DAV: 1, 2, 3, access-control, calendar-access, calendar-schedule
DAV: extended-mkcol, bind, addressbook, calendar-auto-schedule, calendar-proxy
Content-Length: 33
Content-Type: text/plain; charset="utf-8"

REPORT body contains no XML data!