Missing Descritpor for One to One Mapping

Hi,
I have a one to one mapping from an Object A to Object B. When I execute the code, I get an exception as given below. Has any one encountered the same problem ?
Appreciate your help.
Thanks
Priya
Local Exception Stack:
Exception [TOPLINK-7009] (OracleAS TopLink - 10g (9.0.4) (Build 031126)): oracle.toplink.exceptions.ValidationException
Exception Description: Missing descriptor for [class oracle.toplink.indirection.ValueHolder]. Verify that the descriptor has been properly registered with the Session.
     at oracle.toplink.exceptions.ValidationException.missingDescriptor(ValidationException.java:599)
     at oracle.toplink.publicinterface.UnitOfWork.registerObject(UnitOfWork.java:3086)
     at oracle.toplink.mappings.ObjectReferenceMapping.buildCloneForPartObject(ObjectReferenceMapping.java:50)
     at oracle.toplink.internal.indirection.BasicIndirectionPolicy.cloneAttribute(BasicIndirectionPolicy.java:82)
     at oracle.toplink.mappings.ForeignReferenceMapping.buildClone(ForeignReferenceMapping.java:160)
     at oracle.toplink.internal.descriptors.ObjectBuilder.populateAttributesForClone(ObjectBuilder.java:1493)
     at oracle.toplink.publicinterface.UnitOfWork.cloneAndRegisterNewObject(UnitOfWork.java:580)
     at oracle.toplink.publicinterface.UnitOfWork.internalRegisterObject(UnitOfWork.java:2261)
     at oracle.toplink.publicinterface.UnitOfWork.registerObject(UnitOfWork.java:3093)
     at com.starkey.cqm.dao.PersistenceManager.createObject(PersistenceManager.java:65)
     at com.starkey.cqm.bcs.AdminService.saveRoute(AdminService.java:217)
     at com.starkey.cqm.web.RouteAction.processCreate(RouteAction.java:183)
     at com.starkey.cqm.web.AdminAction.execute(AdminAction.java:50)

Looks like you've mapped from ObjectA to ObjectB but accidentally set the target class to be ValueHolder. Except for the checkbox in the Mapping Workbench, you shouldn't need to specify ValueHolder in any of your mappings.

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<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format"
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I think I have put in all the relationships, but I cannot get rid of the error message "The following primary key fields are unmapped: PERSON_ID".
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Please click the Thumbs up icon below to thank me for responding.
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