Region Controller - refreshRegion() error

Hi All,
I am working in ADF 11.1.1.3.0.
I have a requirement to override the refreshRegion method in Region Controller Class.
public boolean refreshRegion(RegionContext rc
super.refreshRegion(rc);
rc.getRefreshFlag();
But it is giving the following error at rc.getRefreshFlag() line:
oracle.jbo.NoObjException: JBO-25003: Object ABC VC of type View Criteria is not found. at oracle.jbo.common.BaseViewCriteriaManagerImpl.getApplyViewCriteriasCommon(BaseViewCriteriaManagerImpl.java:956) at oracle.jbo.common.BaseViewCriteriaManagerImpl.getApplyViewCriterias(BaseViewCriteriaManagerImpl.java:387)
at oracle.jbo.server.ViewObjectImpl.getApplyViewCriterias(ViewObjectImpl.java:8223)
at oracle.jbo.server.ViewObjectImpl.resetAffectedVCs(ViewObjectImpl.java:11080)
at oracle.jbo.server.ViewObjectImpl.setRowSetForSqlGen(ViewObjectImpl.java:11070)
at oracle.jbo.server.ViewRowSetImpl.execute(ViewRowSetImpl.java:1048)
at oracle.jbo.server.ViewObjectImpl.activateNewRowTracker(ViewObjectImpl.java:16812)
at oracle.jbo.server.ViewRowSetIteratorImpl.activateIteratorState(ViewRowSetIteratorImpl.java:3894)
at oracle.jbo.server.ViewRowSetImpl.activateIteratorState(ViewRowSetImpl.java:6971)
at oracle.jbo.server.ViewObjectImpl.activateIteratorState(ViewObjectImpl.java:17792) at oracle.jbo.server.ApplicationModuleImpl.activateVOs(ApplicationModuleImpl.java:7893) at oracle.jbo.server.ApplicationModuleImpl.doActivateState(ApplicationModuleImpl.java:7639) at oracle.jbo.server.ApplicationModuleImpl.doActivateAMState(ApplicationModuleImpl.java:7606) at oracle.jbo.server.Serializer.activate(Serializer.java:291) at oracle.jbo.server.DBSerializer.activateRootAM(DBSerializer.java:327) at oracle.jbo.server.ApplicationModuleImpl.activateState(ApplicationModuleImpl.java:5959) at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:210)
Can someone let me know the issue. My Region Controller class has only refreshRegion() method, do I need to override validateRegion() method also? What am I missing?
Thanks.

Actually RegionController is an interface and not an abstract class, which means that none of the methods are implemented at all. Or what are you sub classing ?
Frank

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