Transaction Support for message broker channel

Hi all,
I have created a JPD and subscribing to an MB channel and listening for messages, suppose the message is delivered to the JPD i.e onMessage is invoked successfully, but at the next node there is an exception thrown, so I want to rollback all the stuff done and also pushback the message to the channel, (and if possible get the message back to the JPD by retrying the entire tranaction).
1. Can the message be pushed back to the channel?
2. Will the channel try to send the same message again to the JPD incase we rollback and wait again at onMessage in the same JPD by means of exceptional path (retry count)?
3. Is the message available for consumption for other subscribers incase we are able to pushback the message to the channel?
4. Bottomline - How can I include the MB channel(message delivery) within transactional boundary?
TIA
Abhishek

Hi kai/All,
Thanks for ur response, but I still have some questions.
1. If the message is not going to be pushed back to the channel, what exactly do we mean by "retry"(is it that I have to resubscribe(and wait at onMessage call in my subscriber jpd) to the channel, and wait for the same message to be pusblished by the publisher JPD)?
Also my requirement is - I am having number of subscriber(JPD instances say workflow JPDs) to the same channel and using filters to deliver the message to the appropriate workflow JPD instance, So, One and only one instance can listen for a particular message, so incase there is an exception in a particular workflow JPD, no other instance can cover for it beacuse of a particualr filter value for the message subscription. How can I overcome this shortcoming?
TIA
Abhishek

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