It seems that if I have process definition 1, which refers to process definition 2 in a process-state node, I must ensure that I deploy 2 before 1, i.e. that sub-process resolution is done at deployment time. Failure to do that results in a an error "Can't create process instance when processDefinition is null" I can't see how this will be workable in a moderately complex scenario where consultants are able to modify and re-upload process definitions. Can we not defer sub-process definition resolution to runtime? Or have I got the wrong end of the stick :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3956904#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...