"pete.muir(a)jboss.org" wrote : After an exception occurs in the persistence layer, the transaction is unusable. You need a new transaction at this point. You should pre validate your data probably. I have some corner cases where I can't pre validate data. I would therefore need to start a new transaction. How do I that if I am using to this approach? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4124774#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...