I have a field, which has an unique constraint in the database. I am getting an Hibernate UniqueConstraint exception. I would like to asynchronously query the database as the user is entering the form and inform that the entry violates the unique constraint. How can I write a validator in Seam that will be invoked by s:validate on the field. Any pointers would be helpful. Thanks, M View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4073319#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...