Throw back same adapter fault - Mediator only composite

Question

Hi
How are you doing!
I have a scenario where there is a Mediator and DBAdapter.
We are using fault policy to handle all faults.
Whenever there is a fault in DBAdapter, when handled using fault policy (to rethrow fault), Mediator is wrapping the original fault and giving its own fault(message below)
Is there a way to get back the same DBAdapter fault as the consumer of this service has to know what is the exact fault.
Please note that BPEL is not to be used in this case(as a design decision in the project), so this has to be achieved only using the Mediator.
I've also tried adding fault to WSDL's of DBAdapter and Exposed service WSDL manually, but no luck.
Converted fault message
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
   <env:Header/>
   <env:Body>
      <env:Fault>
         <faultcode>env:Server</faultcode>
         <faultstring>oracle.tip.mediator.infra.exception.MediatorException: ORAMED-03303:[Unexpected exception in case execution]Unexpected exception in request response operation "insert" on reference "ParentChildDBAdapter". Possible Fix:Check whether the reference service is properly configured and running or look at exception for analyzing the reason or contact Oracle Support Services.</faultstring>
         <faultactor/>
         <detail>
            <exception/>
         </detail>
      </env:Fault>
   </env:Body>
</env:Envelope>
But the actual DBAdapter fault is
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
   <env:Header/>
   <env:Body>
      <env:Fault>
         <faultcode>env:Server</faultcode>
         <faultstring>Exception occured when binding was invoked.
Exception occured during invocation of JCA binding: "JCA Binding execute of Reference operation 'insert' failed due to: DBWriteInteractionSpec Execute Failed Exception.
insert failed. Descriptor name: [ParentChildDBAdapter.PocComplaints].
Caused by java.sql.BatchUpdateException: ORA-00001: unique constraint (SOADEMO.POC_PRTCMP_PK) violated
Please see the logs for the full DBAdapter logging output prior to this exception.  This exception is considered not retriable, likely due to a modelling mistake.  To classify it as retriable instead add property nonRetriableErrorCodes with value "-1" to your deployment descriptor (i.e. weblogic-ra.xml).  To auto retry a retriable fault set these composite.xml properties for this invoke: jca.retry.interval, jca.retry.count, and jca.retry.backoff.  All properties are integers.
The invoked JCA adapter raised a resource exception.
Please examine the above error message carefully to determine a resolution.</faultstring>
         <faultactor/>
         <detail>
            <exception>ORA-00001: unique constraint (SOADEMO.POC_PRTCMP_PK) violated</exception>
         </detail>
      </env:Fault>
   </env:Body>
</env:Envelope>
Appreciate if you could help me on this
Regards
RaviKiran

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