collection

5.1. Example: error with CalDAV error condition

<?xml version="1.0" encoding="utf-8"
  xmlns:CW="http://docs.oasis-open.org/ns/wscal/calws"
  xmlns:C="urn:ietf:params:xml:ns:caldav" ?>
<CW:error>
  <C:supported-filter>
    <C:prop-filter name="X-ABC-GUID"/>
  </C:supported-filter>
  <CW:description>Unknown property </CW:description>
</CW:error>