The solution implementer configured a multi-protocol gateway (MPGW) service to process WebSphere MQ messages using the same MQ queue manager object for both the front end and back end. A request…

The solution implementer configured a multi-protocol gateway (MPGW) service to process WebSphere MQ messages using the same MQ queue manager object for both the front end and back end. A request rule in the processing policy sends a message to queue A and then to queue B in a single transaction by using a "Result Action". The MQ URL for the back end contains the "Transactional=true" tag. The output type of the "Result Actions" is set as "Binary" and the OUTPUT context has a named variable. What are the additional configuration options that the solution implementer needs to guarantee message delivery for both back-end queues? Specifically, if any one message fails, the entire transaction will roll back.