MRP in SAP: Introductory Document

MRP is required to procure or produce the required quantities on time for internal purpose or for sales in SAP. In this document you will find definitions of MRP usage in SAP. See the content below;

  • What is MRP: Why MRP, MRP Process Flow in SAP
  • Master data for MRP in SAP
  • MRP Procedures; Material requirements planning, Master production scheduling, Consumption based planning, Re-order Point Planning, Planning file [MD20]
  • Planning Process: Stock requirement list [MD04], Create PIR [MD61], MRP RUN [MD02], Lot sizing Procedure,
  • Traffic lights
  • ATP (Available to Promise)

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SAP ATP Calculation in SD

This note contains a list of frequently asked questions concerning the result of the ATP calculation in R/3 – SD;

Questions answered;

1.Why does ATP not confirm anything even though transaction MD04 still displays the available quantity and transaction MMBE still displays sufficient stock?

2.Why does ATP not confirm anything even though I currently have stock and an issue element only consumes the quantities much later? Read more