Hi Joy, I saw your post regarding requirement for hierarchical structure workflow. Even I have a similar requirement. I tried implementing it using a task node and a decision node to loop back to task node, but it gives a StackOverFLow exception. I figured out from few posts in this forum that it is known issue in JBPM. It would be great if you could post what approach or design did you use to implement the above pattern. Thanks in advance View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200245#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...