I think they are only available in alater release of the Hibernate Validator. Not sure about compatibility. Regards Felix View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047126#4047126 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4047126