Actually i checked the examples provided by ActiveBPEL and in their data type or message type definitions they dont add anything. Instead, while testing with SoapUI, they enable and then add attachments on the fly. So i wonder how to add an attachment to an web service invocation from the jbossws generated stub.. :? thanks for any explaination View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4119464#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...