Hi Ronald thanks for the reply the book you have suggested is good but doesn't speak much about the jPDL moreover the book's title itself says that it is mainly for business analysts. If you have any idea can you please explain how can I figure out if all the subrocesses has ended before moving ahead with the main process. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243243#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...