Thanks for the reply :-) Let me elaborate a bit: Lets say that after sending the message to the external system, a state is waiting for receipts. There are three possible transitions from that node: 'error', 'receipt' or 'expire'. 'receipt' is forked to some nodes and loops back to the wait state. 'error' are forked aswell, and looped back to the wait state. The loop is due to that I dont know how requests will be received from the external system at runtime (is this the correct way to do it?) The 'expire' transition will go directly to the end-state. Thinking about it, another question pops up in my head: If one receipt comes in and go down the 'receipt' transition and during that execution a concurrent 'expire' request comes in to the wait state and put the processinstance in the end state. What will happen to the fork (or the token that is handled by the fork)? thanks, -Kristoffer View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4063521#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...