Hello, it is possible to write own level validators, validate objects with ClassValidator and add the invalid values to FacesMessages. the problem is, that these errors are bound to the validated object - if there are more objects of the same kind - like in a treetable - it is not very convenient for the user to show them all together as global errors. is there a way to re-bind such errors to a specific field? thanks a lot, Michael Kraxner View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4090669#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...