Thanks Jesper. A couple of questions 1) Did you make the change to enlist the session in the JTA tx *before* the message was received by the JBM session? 2) I'm assuming you have some generic JCA tests for the JMS resource adapter? If so, could you copy them across to JBM? Or point me in the right direction so I can do so... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4209008#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...