On hindsight this is completely out of style with the current implementation. For now ithe implementation should be: EJBContainer: boolean isApplicationException(Exception e) { | return hasAnnotation(e, ApplicationException.class); | } Ejb3DescriptorHandler: void addApplicationException(...) { | 'scan assembly descriptor and addAnnotation' | } See addAssemblyAnnotations. The EJBContainer.isApplicationException will always be the supported API. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4107270#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...