How can I get a reference to the Local interface of a EJB 3 session?

Hi,
How can I get a reference to the Local interface of a EJB 3 session?
My session implements both the local and remote interfaces, so in my client, when I look up the remote interface using the following code, I did get a reference
          processor = (IItemProcessorRemote)initialContext.lookup(IItemProcessorRemote.class.getName());but if I also look up the local interface in th eclient using this:
processorLocal =(IItemProcessor)initialContext.lookup(IItemProcessor.class.getName());I got errors like the following, do you know why? Thanks a lot!
Exception in thread "main" javax.naming.NameNotFoundException: sessions.IItemProcessor not found
     at com.sun.enterprise.naming.TransientContext.doLookup(TransientContext.java:203)
     at com.sun.enterprise.naming.TransientContext.lookup(TransientContext.java:175)
     at com.sun.enterprise.naming.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:61)
     at com.sun.enterprise.naming.RemoteSerialContextProviderImpl.lookup(RemoteSerialContextProviderImpl.java:116)
     at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:121)
     at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:650)
     at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:193)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1705)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1565)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:947)
     at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:178)
     at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:717)
     at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.dispatch(SocketOrChannelConnectionImpl.java:473)
     at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.doWork(SocketOrChannelConnectionImpl.java:1270)
     at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:479)

BTW, findItemByTitle(String title) is a business method in my ItemProcessor session bean.
public String findItemByTitle(String title) {
          AuctionItem item;
          String result = null;
          try {
               Query query = entityManager
                         .createNativeQuery("SELECT i from AuctionItem i WHERE i.title LIKE : aTitle");
               query.setParameter("aTitle", title);
               item = (AuctionItem) query.getSingleResult();
               result = item.toString();
          } catch (EntityNotFoundException notFound) {
          } catch (NonUniqueResultException nonUnique) {
          return result;
     }

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