Requirements Grouping with Grouping WBS Elements for Each Plant (SAP Library

Requirements Grouping with Grouping WBS Elements for Each Plant

Use

You use this procedure if you would like to group material requirements of different WBS elements in a plant using several grouping WBS elements.

This is useful, for example, if you want to group WBS elements in a plant according to certain criteria. You can thus group the WBS elements according to specific criteria and plan the material requirements accordingly in every plant.

In plant 1, all WBS elements from projects with ordering parties from the public sector are to be assigned to grouping WBS element 1 and all WBS elements from projects with ordering parties from the private sector to grouping WBS element 2.

Prerequisites

You have defined that a material is to be planned using requirements grouping by entering the appropriate MRP group in the material master.

You have entered a period lot-size, for example, MB for monthly lot size, in the material master.

You have created several grouping WBS elements and have entered the indicator 2 the grouping WBS element field for them.

If you would like to group the WBS elements according to two criteria, such as ordering parties from the public sector/ private sector, you create one grouping WBS element for each grouping criterion in the plant.

You have selected the Valuated stock field in the project definitions of the WBS elements and the grouping WBS elements (tab page Control data).

You have assigned the MRP groups to every grouping WBS element, for which the grouping WBS element is to be used (see Assigning MRP Groups to a Grouping WBS Element).

You have assigned the WBS elements, whose material requirements are to be grouped, specifically to one of the grouping WBS elements (see Assigning WBS Elements to a Grouping WBS Element).

Features

In material requirements planning, every material in a plant that is allowed to be planned with requirements grouping, is planned with the grouping WBS element that has been assigned the WBS element, which has caused the material requirement. However, this is only possible if you have assigned the MRP groups of the material to the grouping WBS element.

Example

Assembly A in plant 1 (the MRP group 1 is entered in the material master) is assigned to the WBS elements E1, E2 and E3 in the networks.

You assign the WBS elements E1 and E2 to the grouping WBS element D1. You assign the WBS element E3 to the grouping WBS element D2.

You have assigned the grouping WBS elements D1 and D2 to the combination plant1/MRP group 1.

MRP Procedure

The system combines the requirements of the assembly A, which are caused by the WBS elements E1 and E2, and creates a procurement element for these requirements that is assigned to the account of the grouping WBS element.

The system calculates the requirements of the assembly A, which are caused by the WBS elements E3, and creates a procurement element for these requirements that is assigned to the account of the grouping WBS element D2.

If you have not assigned the WBS element, which has caused the material requirement, to the grouping WBS element, individual project planning is carried out for the material with reference to the WBS element. The procurement element is then assigned to the account of the WBS element.

When planning an assembly across plants, that is, for example procured using stock transfer or production in an alternative plant, the dependent requirements are in the planning plant (plant 1) and in the delivering plant/production plant (plant 2). If you have only assigned the grouping WBS element in plant 1, which has been assigned the WBS element of the assembly, to the MRP group in plant 1, then only the requirements in plant 1 are planned with the grouping WBS element from plant 1. This is because plant 2 is unable to determine an assignment for the requirements. In this case, you also have to assign the WBS element from plant 1 to the grouping WBS element of plant 2.