MRPPERFORMANCE.doc

Summary Symptom The runtime of materials planning (total planning or single-item planning) is unsatisfactory. Other terms Material requirements planning (MRP), RMMRP000, RMMRP010, RMMPS000, MD01, MD02, MD40, MS01, MS02,MDBT, MDBS, MSBT, AUSP Reason and Prerequisites The performance depends on a large number of factors:A. Organizational:A1) Type of the planning run: Net change or regenerative planning (intensive)A2) Planning mode: Reactivate or reset planning dates (intensive)A3) Lead time scheduling: no or yes (intensive)A4) Planning horizonA5) Create MRP lists: only for exceptions or always (intensive)A6) If the Purchasing Information System is active, the performance????depends on whether the key figures are updated in a????monthly, weekly or daily period split (intensive).A7) Parallel processing (improves the runtime significantly)B. TechnicalB1) Response times of the hard disksB2) DatabaseB3) Buffering SAP number rangesB4) Program errors or unfavorable database accesses during lead time????scheduling via the routingB5) Performance of the hardwareB7-B9) Implementation of notes for specific performance problems Solution The runtime can generally be reduced significantly by technical and organizational measures. See Note204517.Basically, take into account (sorted according to importance):B2, A1, A2, A7, B5, B1, A6, A5During lead time scheduling:B4, A3When configuring:B8Long selection times for planning file entries at many plants (100)B9A. Organizational------------------A1) Only use regenerative planning (NEUPL) in exceptional cases.A2) Only work with planning mode 3????Reset planning dates in exceptional cases (see Note 135788).A3) Scheduling via the routing is time and work intensive.????The total runtime is strongly determined by how it is used.????- Scheduling using the routing should be limited to the??????time horizon in which it is required.???? (Customizing: Production - Material Requirements Planning - Planning -