When valuated project stock is used, the material components are managed from an MRP perspective in individual requirements stock segments for the separate WBS elements. Requirements grouping allows you to group the requirements of the WBS elements within a project or for several projects for MRP purposes. The joint planning and procurement of the material components required for a project leads to enhanced logistical processing and cost savings in terms of the corresponding lot-size creation.
The following lists the prerequisite for using requirements grouping:
Valuated project stock
Grouping WBS elements (where the stocks are grouped)
MRP groups that allow requirements grouping (in the material master, planning screen 1)
The assigned components require periodic lot sizes (material master, planning screen 1) and must be able to be managed in the sales order or project stock
Background to Requirements Grouping
Requirements Grouping Options
Requirements Grouping
Project definition
Valuated project stock
Automatic requirements grouping
WBS elements
Determine MRP elements (category 1 or 2)
Assign to MRP elements
Customizing PS
Determine MRP groups for requirements
Grouping
Material
Allow sales order or project stock
Assign MRP group
Allow periodic lot size
Requirements grouping is set at the following various points in the system:
Valuated project stock must be allowed in the project definition control data. The automatic requirements grouping indicator can also be activated for the entire work breakdown structure. In this case, the requirements are grouped to one WBS element only (the top one).
The MRP element indicator must be set for WBS elements (exception: automatic requirements grouping). The MRP element determines if and how the requirements may be grouped into one WBS element.
In Customizing for the WBS, you must determine the MRP groups involved in requirements grouping.
Materials to be included in requirements grouping must allow sales orders or project stocks. You must assign an MRP group that allows requirements grouping to these. The lot size of the materials cannot be "exact" but must allow a periodic procedure (otherwise multiple requirements cannot be grouped).