InvalidDestinationException: Mismatched destination properties for destination with name=topic1

For non-durable subscriber, A MessageConsumer can be created via a 
TopicSession.
Example: consumer = 
((javax.jms.TopicSession)m_session).createSubscriber((Topic)destination,null,true);
When I try to create one for topic1, I get follwoing exception. Any clue 
what is going wrong?

EXCEPTION javax.jms.InvalidDestinationException: Mismatched destination 
properties for destination with name=topic1
       at 
org.exolab.jms.messagemgr.ConsumerManagerImpl.getDestination(ConsumerManagerImpl.java:772)
       at 
org.exolab.jms.messagemgr.ConsumerManagerImpl.createConsumer(ConsumerManagerImpl.java:277)
       at 
org.exolab.jms.server.ServerSessionImpl.createConsumer(ServerSessionImpl.java:310)
       at 
org.exolab.jms.server.net.RemoteServerSession.createConsumer(RemoteServerSession.java:224)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:324)
       at 
org.exolab.jms.net.orb.DefaultORB$Handler.invoke(DefaultORB.java:553)
       at org.exolab.jms.net.orb.DefaultORB$1.run(DefaultORB.java:511)
       at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(Unknown 
Source)
       at java.lang.Thread.run(Thread.java:534)






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