In jBPM4.x, is there a way to tell whether an invalid transition is passed to the executionService.signalExecutionById method? In 3.2.3, when an invalid transition was passed into ProcessInstance.signal, an exception was thrown. In the above mentioned 4.1 method, no exception is thrown and the state-transition does not occur. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4260854#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...