Your <item> is incorrect: it does not contain a 'type' or 'value' attribute, yet it contains 'group' and 'jid' attributes (which are not allowed). Please check RFC3921 Section 10 for the correct format.
I notice other people have replied to your question back then with the exact same answer. Please read the answers on your posts before re-posting, or people will stop helping you. cheers, Remko
