"trouby" wrote : So if the same method that is annotated with @begin is invoked within the same bean -instance- a new conversation is created without exception? No, this is not true. anonymous wrote : what's the difference between a new conversation starting from the same bean instance or from different bean instance? why the behavior is different? There is no difference, if there is, it is a bug. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4116370#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...