fyi, i don't have an allergy to namespaces. i want both to be possible: specify a namespace and then the process gets validated. or don't specify a namespace and your process will not get validated. @Koen: i want only 1 namespace for jpdl and 1 for the configuration file. i don't want process files with multiple prefixes. If you set the default namespace to jpdl, no element or attribute defined by us should have a prefix. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191979#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...