Sorry for digging up this old thread, but I have the same problem and can't seem to solve it. I have annotated the exception base class thrown by my WebMethods with @XmlSeeAlso to refer to the subtype exceptions, but it doesn't seem to have any effect and still in the client a SOAPFaultException is thrown instead of the user exception. I am running JBoss AS 4.0.5 with JBossWS 2.0.1.GA. What am I missing? Torsten View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4101950#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...