The Three Records MRP Trusts
Explain why the MPS, BOM, and inventory status record are the non-negotiable inputs to MRP.
MRP is not magic. It is multiplication with dates. Master production schedule The MPS is the demand promise that drives the explosion. It should represent what the business intends to make or replenish, not every wish from every function. A frozen or near-term schedule protects execution from daily churn. Bill of materials The BOM translates parent demand into child requirements. Quantity per, scrap factor, substitute rules, and effective dates matter because every error repeats across every planned build. Inventory status record The inventory record tells MRP what supply already exists. On hand, allocated, in inspection, on purchase order, and scheduled…
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