Picking the right PPM
I have a situation in which halbA is used to make 3 FERTS. All ferts and halb are planned in APO. 3 ppms are defined for the halb.In the ppt I can see all 3 ppm lines but irrespective of from where dependent demand comes(for which FERT), the first ppm of the HALB is selected for planning while heuristic running. How can I set ppms wrt FERTS?
Thanks in advance.