My clint having texturising machine.while he buy the raw material they got a merge number(batch number).when they get a production order they use raw material for single batch number they never mix two (mergh)batch number. based on raw material they change his machine setting and give new batch no for his finish product. for next production order if they get raw material for same mergh(batch)number they directly use the previes machine setting and use the same batch no(previes production order batch no)for the current order. so that FG batch number is depend on machine setting. Its not defferent for each production order.
If the use same batch raw material for number of production orders for that all production order batch numbers are all same.
How to map this in sap?