1. The system checks the planning file entries. Here, the system checks to see whether a material has been changed in some way relevant to MRP and should therefore be included in the planning run (see Checking the Planning File Entries).
2. The system carries out a net requirements calculation for every material. Here, the system checks to see whether the requirement quantity is covered by available warehouse stock and fixed receipts from Purchasing or production. If the requirement quantity is not covered, the system creates a procurement proposal (see Net Requirements Calculation).
3. Then the system carries out the lot-sizing calculation. Here, the system takes the lot-sizing procedure and, if necessary, the rounding up or down values into account (see Lot-Sizing Calculation).
4. The system carries out scheduling to calculate the start and finish dates of the procurement proposals (see Scheduling).
5. The system determines the type of procurement proposals. Depending on the settings, the system creates either planned orders, purchase requisitions or schedule lines for a material (see Determining the Procurement Proposal). If you have maintained the necessary specifications for procurement quota arrangements, the system determines the source of supply which it assigns to the procurement proposal (see Quota Arrangements).
6. The system recognizes critical situations which the planner has to processes manually in the planning results. For this purpose, the system creates exception messages and carries out a rescheduling check (see Creating Exception Messages and Rescheduling Check).
7. It also calculates the actual days’ supply and the receipt days’ supply ( see Days’ Supply and Receipt Days’ Supply and Actual Coverage).

Storage Location MRP

Planning With MRP Areas

Multi-plant planning with stock transfer

Evaluating the Planning Result