@Length doesn't work on its own, you need to use the required attribute in the JSF. See the problems FAQ. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3994048#3994048 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3994048