SAP HELP R/3 4.70 extracts: PP-MRP

 Requirements Grouping with a Grouping WBS Element for Each Plant 

Use

You use this procedure if you want to combine all materials requirements of a plant using a single grouping WBS element. You have to create an individual grouping WBS element for each plant if you want to group requirements for other plants.

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 a grouping WBS element for each plant and have entered the indicator 2 in the grouping WBS element field.
• You have selected the valuated stock field in the project definitions of the WBS elements and the grouping WBS elements (tab index Profile).
• You have assigned the MRP groups of a plant, for which requirements grouping is activated, to the grouping WBS element of the same plant. Example: All MRP groups in plant 1 that are relevant to requirements grouping are assigned to the grouping WBS element of plant 1 (see Assigning MRP Groups to a Grouping WBS Element).
• You have assigned the WBS elements of a plant, whose material requirements are to be combined, to the grouping WBS element (see also, Assigning WBS Elements to a Grouping WBS Element).

Features

In material requirements planning, every material in plant 1 that is allowed to be planned with requirements grouping is planned with the grouping WBS element for plant 1. A prerequisite for this is that the WBS element, which caused the requirement, is assigned to the grouping WBS element and at the same time, the MRP group is assigned to the grouping WBS element.

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, 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, as 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.