Conditional routing - 1 sender to 1 receiver but with multiple locations

Hello Experts,

I have a scenario where i am trying to post ALEAUD Idocs (acknowledgement Idocs) from ECC - PI - MDM.

I need these acknowledgement statuses to get updated in MDM (receiver system) for MATMAS, CREMAS and DEBMAS.

I am through till receiving the acknowledgemnts in PI. I am stuck at a point wherein I need to route MATMAS related messages to a different folder in the receiver system (MDM) wheraes messages realted to CREMAS should be routed to another folder in the same receiver system (MDM) and similar is the case with DEBMAS.

ALEAUD Idoc has an element <MESTYP> which identifies whether the acknowledment belongs to MATMAS, CREMAS or DEBMAS, but i cannot use Reciever determination for conditional routing in this case.

Will BPM help in this case? If not, kindly advice the appropriate solution.

Thanks in advance,

Elizabeth.