"shilpa.kumar(a)indussoft.com" wrote : I am also getting the same error. I am working on jbpm3.2.2\jbpm-jpdl-3.2.2 & websphere 6. I am able to connect and give token.signal but at state-end i am getting this error. | | | org.jbpm.db.JobSession deleteJobsForProcessInstance org.hibernate.TransactionException: Could not register synchronization | | | Can you please help me. I already running behind time. and saw all sites from almost 2 weeks. but still not getting any solution..... | | I don't have a solution, but I'm experiencing the same problem, I think. In my case, I'm manually clicking "End" while viewing a process instance in the jbpm-console web app. I've followed the stack traces and found that the reason that the synchronization couldn't be registered is because of a NullPointerException that occurs inside CMTTransaction on line 156: | 154: public void registerSynchronization(Synchronization sync) throws HibernateException { | 155: try { | 156: getTransaction().registerSynchronization(sync); | 157: } | 158: catch (Exception e) { | 159: throw new TransactionException("Could not register synchronization", e); | 160: } | 161: } | So for some reason, getTransaction() is returning null... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168559#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...