Regenerative planning run in APO

[m_manimaran]

Hi experts,

I need your input on the following scenario.

We have APO PPDS implemented for our Manufacturing industry client. We have designed to run only Net Change Planning every day and there is no design to run Regenerative Planning.

What is the importance of running Regenerative Planning? What do we lose if we don't run a regenerative planning?

We have CTP scenario, so there are lot of parts planned automatically.

Is there any impact of automatic planning on Regenerative planning and vice versa?

What is the best practice to follow with respect to Regenerative Planning?

I appreciate if someone could answer these questions. Thanks in advance.

Regards,

Manimaran M.

[m_manimaran]

Hi Gurus,

Any input on this.

I would appreciate if someone could provide some guidance on this.

Thanks,

Manimaran M.

[Former Member]

Hi Manimaran,

Genrally weekly planning run is executed net change planning only. Net change planning plans only items with planning file entry this results in improved performance and  more stable results.

I do not see any drawback of not having regenrative planning

[SatishWaghmare]

Hello Mani

Following are details are from old SAP Handbook,  good information to understand the concept.

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• Net Change Planning

Automatic material requirements planning is especially hard on system performance for production processes with complicated BOM structures. To guarantee frequent planning runs of those materials which are relevant for planning despite this problem, you can carry out the planning run with the "net change planning" procedure. This process only plans those materials which have undergone a change relevant to material requirements planning (for example, change in a production order due to excessive scrap, a new sales order, and so on) since the last planning run.

The so-called planning file exists especially for the planning run and contains all the materials and their respective MRP types. If a material is changed in a way that is relevant to the planning run, it is given a net change indicator meaning that it will be included in the next net change planning run. In a net change planning run, only these materials are planned.

• Net Change Planning in the Planning Horizon

Performance can be improved even further by using the net change planning run in the planning horizon.  Here, only those changes relevant to requirements planning that fall within a specific period (defined by the user and known as the planning horizon) are included in the planning run. It is advisable in this situation to carry out a total planning run in regular intervals (for example, weekly or monthly) to keep the planning results completely up-to-date.

• Regenerative Planning

It is also possible to carry out a regenerative planning run. In this planning run, the system plans all materials that are relevant for planning. Usually, the regenerative planning run is only carried out in the implementation stages.

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Hope this will help.

Thank you

Satish Waghmare