I've taken the related JIRA issue, JBCTS-719, and will make a corresponding issue to address the same problem in the EJB3 Testsuite. "EJB3 Core Specification 4.6.6 Bullet 5.6" wrote : If bean class implements a single interface, that interface is assumed to be the business interface of the bean. This business interface will be a local interface unless the interface is designated as a remote business interface by use of the Remote annotation on the bean class or interface or by means of the deployment descriptor. I believe the code's in place in EJB3 Core to handle this case; we recently had a problem where the default business interface could not be determined due to duplicate occurances of the same interface ( http://jira.jboss.com/jira/browse/EJBTHREE-1124 ). Error there was: java.lang.RuntimeException: Use of empty @Remote on bean test-bean-for-stateful with more than one default interface [interface com.whatever.Interface1, interface com.whatever.Interface1] at org.jboss.ejb3.ProxyFactoryHelper.getRemoteAndBusinessRemoteInterfaces(ProxyFactoryHelper.java:591) I've not yet seen this error from the annotation processor. Will post back if I can duplicate in EJB3 Unit Tests. S, ALR View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4110069#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...