Hello Ronald, Thank you for your quick response. Somehow i am able to match the relations and tried correcting the missing relation (NULL values) and got the system stable. But, I think it is necessary to have a validation routines/scripts (could be optional , can be enabled by configuration) to validate the process execution data before starting the actual work to reduce the problems in this kind of scenarios. I am interested to work on this use case and shortly i will post the implementation considerations for this use case. Thank you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4175429#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...