During the net requirements calculation, the system determined the shortage quantities and material shortage dates. During lot sizing, the lot sizes and order proposals necessary for covering requirements were determined. These order proposals must now be scheduled. There are two procedures available for scheduling:
- backward scheduling
- forward scheduling
The following times are taken into account for scheduling externally procured materials:
- planned delivery time of the material based on calendar days
- processing time required for purchasing based on workdays
- goods receipt processing time based on workdays
When creating planned orders, the system also takes the following time into consideration:
- opening period based on workdays
Backward Scheduling for External Procurement
Forward Scheduling for External Procurement
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