Repetitive Manufacturing Queries

Dear All,

In repetitive manufacturing, If I am not using planned order for backflush confirmation in MFBF transaction then is it required to use MF50?

if I am not using MF50, then is there any problem in further business process flow? because, Instead of planned order, I want to use finish good material in MFBF.

If planned orders are not used then is it necessary to run MRP/MPS for materials?

As questions are interlinked hence asked in same thread. Expecting experts views.

Thanks,

Narresh