Rollback of Messages in OSB

I have a usecase as below -
jms.Q1 (nonxa) -- [ proxy service -- publish to a jms.Q2 (xa) -- raise an error ]
A proxy service receives request from non-xa queue (Q1) ,
then the proxy service publish that message to another queue (Q2) via XA enabled business service (i use connection factory as XA) ,
then i raise an error in the message flow.
What i need is, I want to rollback the message which i published to "Q2" once i raise an error in message flow.
Can anyone please help me out whether this is possible by using any of the routing option,etc..?
Regards
Sesha

Configure these:
1. Enable the option Same Transaction For Response in the Proxy Service configuration.
2. Use QoS as Exactly Once in the publish action which calls the JMS business service.
3. Use XA connection factory for connection between businsss service and target JMS Queue
4. Make sure that the error reaches System Error Handler. To ensure this you need to make sure that the flow does not encounter any Reply action after the Raise Error action you have configured in the message flow.
Once you configure like above:
1. Message will be deleted from source queue as soon as OSB Proxy picks up the message (since this is not XA enabled)
2. Message will be published to target JMS queue but not committed till the message flow is completed. So it can rollback in case there is an error after the publish action.
3. If based on a condition a Raise error action is executed (or any other error happens in the flow) message will be rolled back from target queue in case the error reaches the System Level error handler. So message will not be present in neither source queue nor the target queue.

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