When I use the same code with @Lenght validation all is working fine. Am I right that it's caused by the problem described in documentation: anonymous wrote : Note: specifying @NotNull on the model does not eliminate the requirement for required="true" to appear on the control! This is due to a limitation of the JSF validation architecture. | ? If so is there any way to customize validation error message for required=true constraing? Regards, karol View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4113612#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...