Error invoking EJB method using Wm6.5 to EJB Adapter

I created and configured EJB Adapter service for create/invoke/createInvoke and i am getting the jndi names and the services listed. When i tried to give parameter and run the service i get following exception. Any help regarding the same is appreciated or let me know if you need any more informtion to give suggestion.

Exception while running Adapter [ART.117.4002] Adapter Runtime (Adapter Service): Unable to invoke adapter service POCEJB:createInvokeEJB.
[ADA.640.5007] Failed to invoke remote method: performService, reason: IDL:java/lang/Ex:1.0


Webmethods 6.5 -->EJB Adapter6.0 -->Websphere Application Server