I've now solved the problem if anyone else is suffering the same problem. I abandoned Netbeans and manually used wscompile to build the web-service server artefacts (including the mapping XML file). I then manually created the following: web.xml webservices.xml SEI_Implementation_Class and it successfully deployed into JBoss and it is being called successfully from a .NET application. Cheers Dave View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4051854#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...