Planning Run Type (SAP Library - Material Requirements Planning (PP-MRP))

Planning Run Type

Use

The planning run type determines which materials are to be planned:

Regenerative planning (NEUPL)

The system plans all the materials that are contained in the planning file

Net change planning (NETCH) or Net change planning in the planning horizon (NETPL)

The system only plans materials that have undergone a change relevant to MRP since the last planning run

You choose the required planning run type in the initial screen of the planning run (see Planning Run Type in Initial Screen).

Features

Net Change Planning (NETCH)

In net change planning only those materials are planned for which the net change planning indicator in the planning file has been set as a planning file entry. The system usually sets the indicator automatically as soon as a change is made to the material that is relevant to MRP.

The following changes cause an entry in the planning file to be made:

Changes to stock, if these change the stock/requirements situation of the material
Creation of purchase requisitions, purchase orders, planned orders, sales requirements, forecast requirements, dependent requirements or reservations
Changing to fields that are relevant to the planning run for these receipts and issues or in the material master
Deleting receipt or issue quantities

If you have changed the settings of an MRP type, a lot-sizing procedure or a purchasing department processing time in Customizing, the materials that are affected by these changes thus have no planning file entry and are not included automatically in the net change planning. To enable the changes made to take effect, you choose regenerative planning in the initial screen of the planning run or make an entry manually in the planning file.

Net change planning in the planning horizon (NETPL)

You can also use a planning horizon to further limit the scope of the planning run. In "net change planning in the planning horizon", the system only plans materials that have undergone a change that is relevant to the planning run within the period which you defined as the planning horizon. The system sets the net change planning horizon indicator automatically for these materials.

Activities

During the planning run, the system checks every entry for a material in the planning file:

In a regenerative planning run, the system plans all materials which are included in the planning file irrespective of all indicators.
In a net change planning run, the system only plans those materials which are provided with the net change planning indicator.
In net change planning in the planning horizon, the system only plans those materials provided with the net change planning horizon indicator.

On completion of the planning run, the appropriate indicator is automatically deleted in the planning file:

The system deletes the net change planning indicator and the net change planning horizon indicator for a regenerative planning run and a net change planning run.
The system only deletes the net change planning horizon indicator for a net change planning run in the planning horizon

If a termination occurs when planning a material, the indicators for this material remain in the planning file so that the material is planned again in the following net change planning run. However, depending on the error, you can manually delete the indicators in Customizing for MRP in the IMG activity Define Error Processing in the Planning Run if necessary (for example, if a certain material is not available in the planning plant). This means that you can avoid a situation where materials are pointlessly planned again and again.