Determining and Assigning Storage Locations to the MRP Area (SAP Library

Determining and Assigning Storage Locations to the MRP Area

Use

You assign goods receipt and issue elements to an MRP area using the receiving storage location in the case of receipt elements, and using the issuing storage location in the case of the issue elements.

Prerequisites

You have defined the MRP areas in Customizing for MRP.

You have assigned the MRP areas to the materials in the material master.

You have defined the issuing storage location for the components.

You have defined the receiving storage location for the assemblies.

Features

Assigning the Receipts and Issue Elements to an MRP Area

The receipt elements (planned orders, purchase requisitions and so on) are assigned using the receiving storage location, which the system determines during the planning run. The receiving storage location is displayed in the MRP list or the stock/requirements list in the column Storage location or it is displayed in the procurement element itself, for example, in the header data of a planned order. The system checks whether the receiving storage location that has been determined belongs to the MRP area. If this is the case, the system assigns the receipt element to the MRP area.

The issue elements (planned independent requirements, sales orders, dependent requirements, reservations) are assigned via the issuing storage location, which the system determines during the planning run. The issuing storage location is displayed in the MRP list or the current stock/requirements list in the column Storage location as well as in the component list of the planned order.

If the system is unable to determine a storage location, the system assigns the receipt or issue element to the plant MRP area.

Determining the Storage Location for Receipt Elements

You can maintain the receiving storage location for a material on various screens in the system:

as receiving storage location for repetitive manufacturing in the production version
either as production storage location (in-house production) or as external procurement storage location (external procurement) in the MRP area segment of the material master or in the material master itself
as receiving storage location in Customizing for MRP in the IMG activity Define MRP areas

The system determines the storage location as follows:

First of all, the system checks whether a valid production version has been created. If this is the case, the system copies the receiving storage location from the production version into the receipt element. If this storage location belongs to an MRP area that has been assigned to a material, the system assigns the receipt element to the MRP area. If the storage location that has been determined belongs to the plant MRP area, the system assigns the receipt element to the plant MRP area. If this storage location does not belong to an MRP area that has been assigned to a material, nor to a plant MRP area, the system ignores the storage location.

In the case of external procurement, the system does not take into account any production version, which may be available, when determining the storage location.

Example 1: (Assembly with two Production Versions)

An assembly is assigned to two MRP areas of the storage location type and can be manufactured on two different production lines (line 1 and 2). You have therefore created two production versions for the assembly:

version 1 with production line 1 and the receiving storage location 0001

version 2 with production line 2 and the receiving storage location 0002

You have defined one MRP area each for both storage locations and you have created the MRP area segments in the material master.

During the planning run, the system determines the production version on the basis of its settings that is valid for the procurement proposal, for example, production version 1. In doing so, the system assigns the receipt element to the MRP area of the storage location 1.

Example 2: (Assembly with one Production Version)

An assembly with two different MRP areas is manufactured on a production line. You have therefore only created one production version. In this case, you are not allowed to maintain storage locations in the production version, as otherwise it would always be assigned to the same MRP area.

If a production version does not exist, the system checks whether you have defined a storage location in the MRP area segment (either a production storage location for in-house production or an external procurement storage location for external procurement). If this is the case the system adopts this storage location.
If you have not maintained any of these storage locations, the system adopts the receiving storage location, which you entered for the MRP area in Customizing in the IMG activity Define MRP areas.

Determining the Storage Location for Issue Elements

The system determines the storage location for the issue of components during the BOM explosion in the planning run. The system proceeds as described in Storage Location Determination in BOM Explosion.

The storage location found determines the assignment to the MRP area.