Hi Ronald, you are right. I will try to provide details: My action class extends springmodules JbpmHandlerProxy which further implements ActionHandler and has execute method: | public void execute(ExecutionContext executionContext) throws Exception | So, my action is invoked synchronously (on node-enter event) and tries to establish connection with some web service. If web service is not reachable, I have java.net.ConnectException thrown from my action class and propagated to my web tier. Now, everything would be Ok and expected if I could later delete that process instance, but I can't due to FK constraint. Log and other details are provided in first post. Thank you. Milan View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4020143#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...