You use this function to handle material requirements planning (MRP) requirements for Vehicle Sales and Service. The main function of MRP is to guarantee material availability. You use MRP to procure or produce the required quantities on time both for internal purposes and for sales and distribution. This process involves the monitoring of stocks and, in particular, the automatic creation of procurement proposals for purchasing and production. For parts, you can use standard ERP functionality for planning, procuring and inventory management. For parts planning, you can use different MRP strategies, such as consumption-based planning.

You can use planning tools to manage the procurement of the right parts at the right time. The decision to stock a part needs to be balanced with high levels of order fulfillment or service level agreements (SLA). For some high volume parts, a daily or weekly order may be practical. In the other cases, for example if you must procure high value parts, a one-time order may be appropriate.

In VSS, the system represents parts requirements for orders as material reservations.

Prerequisites

You have set an MRP Type for MRP in the SAP Easy Access Menu under Logistics > Materials Management > Material Master > Create (immediately) (or Change (immediately)). Choose view MRP1 for the material and set the MRP Type, for example PD.

Features

General Information
For general information about MRP, see Material Requirements Planning (PP-MRP).

MRP Procedures

MRP includes the following procedures:

Material Requirements Planning is carried out using current and future sales figures. The planned and the exact requirements quantities trigger the net requirements calculation.
In Master Production Scheduling, finished products and important assemblies, so-called master schedule items, are planned separately and with extra attention. Only the master schedule items are planned in this planning run. The system creates dependent requirements for the bill of material (BOM) level directly below the planning level. It does not, however, plan levels below this.
Consumption-Based Planning uses past consumption data (historical data) to calculate future requirements with the help of the material forecast or statistical planning procedures. The net requirements calculation is not hereby triggered by an independent or dependent requirement, but is triggered either when stock levels fall below a reorder point or by forecast requirements.

Planning Process

For information about net requirements calculation and the calculation of the procurement quantities, see Planning Process.

MRP Transactions

You use the following MRP transactions to perform an MRP run, and evaluate the results:

MD01 (MRP Run)
MD03 (Single Item, Single-Level)
MD04 (Stock/Requirements List)
MD07 (Collective Stock/Requirements List)

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