We had the same issue in that the .NET compact framework does not handle unqualified too well. Setting up a package-info.java with | @javax.xml.bind.annotation.XmlSchema(namespace = "http://a.c.f.i.com", elementFormDefault=javax.xml.bind.annotation.XmlNsForm.QUALIFIED) | package a.c.f.i; | in the directory containing all the objects being transferred to the client solved it for us. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050809#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...