Bert, In your code JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance(); | JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext(); | GraphSession graphSession = jbpmContext.getGraphSession(); | ProcessInstance pi = graphSession.loadProcessInstance(processId); | process.signal(); You fill pi with the instance, but use process.signal(). A typo or the real cause? (I think the former) What is needed here is a full unit test to show the behaviour. That way we can simulate etc.... Besides that post ALL relevant info on your environment (jbpm version, jdk etc) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3958614#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...