The error could indeed be useful but this is not what I am asking for. getServiceDescription is one of the first messages that a consumer would send to a producer to learn about its capabilities. I would need to see the response to that request to see what Websphere sends... I would suggest that you read the WSRP specification for more details. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4101322#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...