I want to add a message to a control in a datatable. with FacesMessage.add(xxx) it's not possible, because I have to define the id of the component, not the client Id. Therefore I can not specify in which row of the dataTable the rendered component is, where the facesMessage belongs to. I have to use a method, which has the clientId, not the id. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4077763#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...