MRP List and Stock/Requirements List (SAP Library - Material Requirements Planning (PP-MRP))

MRP List and Stock/Requirements List

Definition of the MRP List

The system creates MRP lists during the planning run according to how you set the creation indicator. These lists contain the planning result for the material. The MRP list always displays the stock/requirements situation at the time of the last planning run and it also provides a work basis for the MRP controller. Changes that are made after the planning date are not taken into consideration, so the list is static.

MRP lists are stored in the system until they are either deleted manually or replaced by new lists from a subsequent planning run.

Stock/Requirements List

In the stock/requirements list, the most up-to-date stock and requirements situation is displayed.

The main difference between the MRP list and the stock/requirements list is that each time the stock/requirements list is called up, the system selects the various MRP elements and displays the most up-to-date situation. You thus always see the current availability situation of the material in the stock/requirements list. Changes that are made after the planning date are displayed directly, so the list is therefore dynamic.

Stock/requirements lists are not saved in a fixed state in the system, but are subject to change and only exist in the working memory.

Comparison

The screen layout of both lists is basically the same.

The system automatically runs the rescheduling check directly when both lists are created and puts forward rescheduling proposals.

The number of exception messages displayed in each list is roughly the same. The only difference lies in the fact that, due to the nature of the list, no exception messages can occur for newly planned MRP elements in the stock/requirements list.

Directly after the planning run, both lists contain the same information. As soon as a change relevant to MRP is made, the system updates the information in the stock/requirements list.

As stock/requirements lists are subject to change, they cannot be set with a processing indicator.

Structure

Each MRP list is divided into a header and items.

Material data, such as the material number, the plant, and MRP parameters, is recorded in the MRP list header.

The items, on the other hand, contain information on the individual MRP elements (planned orders, purchase orders, reservations, sales orders, and so on). These are grouped by MRP data into individual planning segments. The beginning of each new planning segment is highlighted. The system carries out the net requirements calculation for each segment separately.

Planning Segments

The following segments are individually displayed and individually planned:

Net segment

Consists of that part of the list for which the net requirements calculation in planning was carried out on plant level.

Gross segment

Groups together the gross requirements and the corresponding procurement proposals for gross requirements planning.

Storage location segment

For every separately planned storage location or for every location, which is not included in MRP.

Individual customer segment
Individual project segment
Segment for planning without final assembly

Displays the requirements that are planned without final assembly. This means that their procurement is triggered by the incoming sales orders and non-convertible planned sales orders with the order type VP.

Segment for direct production planning
Segment for direct procurement planning
Direct production segment
Direct procurement segment
Segment for the provision of material for subcontracting