anonymous wrote : IllegalStateException should be thrown if @Begin(nested=true) is encountered and there is no long-running conversation active. I think that might cause some difficulties with reuse and recursive use. I.e. In crud application i can start creation of a new object from a master list (=starting new conversation), OR from within the creation of another object (=starting nested conversation). In both cases the same @Begin method would be called, and the callee should not concern itself who called it or why. Disclaimer; i'm only evaluating Seam so i might have understood things wrong. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4060697#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...