I've realized that Transition.getName() can be null. Even though the designer creates transition names, manually created process definitions may not contain transition names. The only case where you can signal without a transition name is activities w. a single out transition. Shouldn't the names be enforced? Or at least be created by the engine at deploy time, when no names a re provided? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4228912#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...