"matt.drees" wrote : If I were you, I'd try to get annotation-based validation working. | | So, either: | -try including a newer Hibernate Validator jar | -write your own (i.e. copy/paste Hibernate's) Matt, thanks for your help. Do you happen to know what version of the hibernate-validator jar to use? The jboss downloads page only offers 3.0. My project was built using the seam-gen tool. So it is using the hibernate-all.jar. Do I need to replace this with all new hibernate jars or can I simply add the new hibernate-validator.jar? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093025#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...