Reoder point calculation don't give the expected result

Question

Dear friends,
We are using CBP to set reorder point (MRP type is VM).
We've set the planned delivery time, on MRP2 view, as 120 days.
When we run the forecast, the calculated basic value gives the expected
result, but the reorder point don't.
As we've set Planned delivery time as 120 days, we expect that the
reorder point is "basic value"*4 (4 is the result 120/30). But the result
of the reorder point is is greater (aprox. "basic value"*4,5).
Can you please give me a help on this matter?
Many thanks,
Afonso Pereira

Answer 1

you may get your expected result if you would use VB instead of VM.
Manual Reorder Point Planning
In manual reorder point planning, you define both the reorder level and the safety stock level manually in the appropriate material master.
Automatic Reorder Point Planning
In automatic reorder point planning, both the reorder level and the safety stock level are determined by the integrated forecasting program.
The system uses past consumption data (historical data) to forecast future requirements. The system then uses these forecast values to calculate the reorder level and the safety stock level, taking the service level, which is specified by the MRP controller, and the material's replenishment lead time into account, and transfers them to the material master.
Since the forecast is carried out at regular intervals, the reorder level and the safety stock level are continually adapted to the current consumption and delivery situation. This means that a contribution is made towards keeping stock levels low.