"wschwendt" wrote : it looked to me as if it could be a state restoration issue. | | When the view tree is constructed during the first RENDER RESPONSE phase, the validator properties (attributes such as minimum or maximum) are stored. On a subsequent faces request, this state is supposed to be restored during the RESTORE VIEW phase. But it appears that this isn't working correctly. | the debugging clearly revealed that validator properties are not correctly restored. So it's absolutely no surprise that validation in turn doesn't work. For example, if f:validateLongRange is applied to a component and its "minimum" and "maximum" properties are not restored correctly during RESTORE VIEW, the validator does nothing. Further note that trinidad-impl-1.2.1.jar contains a faces-config.xml in META-INF, which replaces the standard JSF RI validators with a Trinidad implementation of these validators. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4071415#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...