Hibernate/JPA can't solve the identity problem when the requirement is to apply a specific externally-generated identifier to the process and be able to reference the process by it later. This is a frequent business requirement. In BPEL, all of the "Correlation Set" support addresses this - far more comprehensively than you/we perhaps have any need for. -Ed Staub View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4014980#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...