Consumption of PIRs with Segmentation 
For materials with segmentation, the consumption of the planned independent requirements depends on the consumption mode and the consumption priority.
Prerequisites
You have defined one of the following planning strategy groups for materials with segmentation in the material master:
40 – Planning with Final Assembly
20 – Make-to-Order
Process
In the material master, you define the sequence in which the system consumes the PIRs based on the segments, consumption mode, and the consumption priority.
Using the consumption priority, you can define how the planned independent requirements are to be consumed based on segments or the consumption mode. You can choose the following option:
2 – Only if Requirement Segments Match
The system consumes the requirements based on the consumption mode and whereby the requirement segments of the customer requirement and the PIR must match.
Result
Withdrawal Quantity
The system updates the withdrawal quantity column when you create a delivery for a customer requirement, which has consumed planned independent requirements with material segmentation.
Reorganize PIRs with Segmentation
You can reorganize the PIRs with segmentation using the combination of the key date and the external requirement plan ID.