Sorry, didnt know about the AsyncCommandService, should've checked before posting ;-) anonymous wrote : There should be a way for users to obtain a synchronous and an asynchronous version of the ProcessEngine. E.g. by adding a method ProcessEngine getAsyncProcessEngine() on the process engine itself. Isn't this confusing to have 2 process engines for people that want to use both sync and async commands (altough the use cases are limited, but they do exist). Can't the services returned by the processEngine be sync or async? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4236930#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...