I am not sure Ankit, I don't think its possible. Asynchronous modes are like fire and forget mechanisms..
Anyways, Technical Basis (SAP Library - Components of SAP Communication Technology) . An interesting read about sync/async communication for a RFC. The document too mentions that for any scenario that require immediate response, async is not the way to go.
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Having said that, if you could write a call back function in ERP that would send an acknowledgment to MII, then the message listeners can trigger a transaction that would in turn update the database. Never done this before, but it should be possible.
Regards
Tufale Ashai
Message was edited by: Tufale Ashai