Use
If you use valuated project stock, the material components are kept, from a MRP view, in individual stock segments for individual WBS elements. As a result, neither requirements consumption nor stock settlement can take place between WBS elements.
In grouping the requirements from WBS elements in one or more projects are combined for material planning.
The joint planning and procurement of material components required for a project leads to improved logistic processes and to savings due to larger lot sizes.
You can facilitate requirements consumption and stock settlement for individual material components by assigning the components to other WBS elements in the component assignment detail screen or in
Prerequisites
You can only use grouping for
valuated project stock. This means that when you create the projects involved, you must set the Valuated stock indicator on the Control tab page of the project definition.You must have assigned the materials that are to grouped for MRP to a MRP group that is intended for grouping in the material master.
To make sure that MRP really only creates one procurement element for all the requirements for one material and grouping WBS element,
Features
In grouping the system groups several stock owners (WBS elements) together in one
Grouping WBS element.MRP creates procurement elements (planned orders or purchase requisitions) for the requirements from the grouped WBS elements. These procurement elements are account assigned to the grouping WBS element.
In the individual stock of the grouping WBS element, all the materials are kept that are to be grouped and those materials that are required in the grouped WBS elements.
The procurement costs are settled to the grouping WBS element. When the procured material is withdrawn, the costs are posted to the original source of the requirements.
The different forms of grouping, which differ in their complexity, are described below:
Automatic Grouping of all WBS Elements in a Project
In the simplest case all the requirements from all the WBS elements in a project are grouped in one grouping WBS element. As a result a project stock segment is created for the whole project. Here you can use the
Automatic Grouping function.You set the Auto rqmnts grouping indicator on the Control data tab page of the project definition or in the project profile. Only one grouping WBS element is permissible for all materials in the project. As a standard setting the system proposes the first WBS element on level 1 as the grouping element, except if you are creating using a template and another default is proposed. You can reset the indicator for the WBS element in question and choose another WBS element to be the grouping element.
If you change the grouping WBS element when there are already requirements in the project, you must be aware that the requirements in the project will then be grouped on different WBS elements.
Manually Assigning WBS Elements to Several Grouping WBS Elements
You can also assign WBS elements from one or more projects manually to different grouping WBS elements. Choose Logistics or Accounting ® Project System ® Material ® Planning ® Requirements grouping ® Assign WBS elements individually.
Assigning Materials to Different Grouping WBS Elements According to the MRP Group
If you want to assign the material components in one WBS element to different grouping WBS elements, you can do so by using the combination of plant and MRP group. To do so, the grouping WBS elements must have the characteristic value Grouping WBS element for selected MRP groups (2).
To assign the combination of MRP group and plant to the grouping WBS elements, choose Logistics or Accounting ® Project System ® Material ® Planning ® Requirements grouping ®
Assign MRP groups.Activities
For more information on special scenarios from the MRP point of view, see Material Planning and Requirements Grouping.