@wise_guybg Thank you for your explanation. I conducted an experiment placing the third selectOneMenu (also with categoryList) on a page but not specifying it in reRender parameter of <a:support>. After loadCategoriesByBranchId() method was called only one selectOneMenu was refreshed (the specified in reRender). So it seems that only the part of a page is refreshed. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4086763#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...