Remove the @NotNull validator for any @GeneratedValue fields (we made this change in CVS to seam-gen) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4098863#4098863 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4098863