I could synchronize in JobExecutorThread on the parent token, but that hack seems even dirtier than the other. I'll give it a try though ;) What did everyone else do in case of concurrent threads in a process instance? the discussions I found in the forum never came to a conclusion... I'm leaving the jira issue as is for now... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4049752#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...