Bijection isn't available in Entity Beans. http://docs.jboss.com/seam/latest/reference/en/html_single/#d0e2229 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965119#3965119 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965119