I'm sincerely sorry. The examples provided are somehow not complete and right. I'm posting them again for proper ilustration: Java client would send a request like this: <q0:getUserByCredentials> | <arg0>k</arg0> | <arg1>m</arg1> | <q0:/getUserByCredentials> Delphi client would send a request like this: <getUserByCredentials xmlns="somens"> | <arg0>k</arg0> | <arg1>m</arg1> | </getUserByCredentials> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027455#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...