In creating my own ServletsMetatData and ServletMetatData classes and add the XmlElement annotation for each setter present in specifying the javaee namespace in the ServletMetatData class + adding the XmlType annotation at the class level with the javaee namespace specified it worked but now if you don't specify any schema in the sip.xml which will call the JBossSip11MetaData (http://code.google.com/p/mobicents/source/browse/trunk/servers/sip-servle...) it fails because it seems it tries to lookup the javaee namespace always... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200723#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...