We have similar issues with getting a null token using call process.getRootToken(). It is fairly easy to achieve that: * Define your own ActionHandler class. All it should do in execute(ctx) method, is throw new java.lang.Exception("haha") * Place this ActionHandler into jpdl * Invoke state transition by calling process.getRootToken().signal() That would be the last moment when you are able to access rootToken. Next time process.getRootToken() will return NULL value. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4048098#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...