"adrian(a)jboss.org" wrote : | You are back to "transaction observer" semantics for BMT/Not Supported. That is the UserTransaction can quite happily commit, but then the MDB throws an NPE afterwards. We happily rollback the delivery. Equivalently, the MDB happily commits the UserTransaction but we later find we can't commit the jms session. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4026691#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...