Try this- In your ejb-jar.xml, change: <remote>de.fhw.komponentenarchitekturen.knauf.stateless.GeometricModelRemote</remote> | <local>de.fhw.komponentenarchitekturen.knauf.stateless.GeometricModelLocal</local> | to (in this order) <business-local>de.fhw.komponentenarchitekturen.knauf.stateless.GeometricModelLocal</business-local> | <business-remote>de.fhw.komponentenarchitekturen.knauf.stateless.GeometricModelRemote</business-remote> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4184066#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...