No, not at this time. But @NotNull has nothing to do with Seam. It is part of hibernate Validator. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3975183#3975183 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3975183