Hello, I have a big problem in my page xhtml, when I add a component(commandButton), it shows a bug : java.lang.IllegalStateException: Client-id : _id5 is duplicated in the faces tree, | javax.faces.webapp.FacesServlet.service(FacesServlet.java:121) | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | , while this id is not duplicated (my anonymous wrote : id="commandButtonAZETUTIUTYUITYUTYUTYUT",), It's impossible that it's duplicated with this id). Please help me. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4081690#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...