Tag Archives: PP

Distribution of Planned Independent Requirements in MRP

Distribution of planned independent requirements can be key in getting your MRP results exactly right. This post is about how to break down your Sales and Operations Plan and schedule it for MRP. E.g. Assume your SOP is planned in monthly buckets, but you plan your production in weekly buckets and you use forward scheduling for your production orders. In this case you want independent requirement quantities show on the first day of the week. Another example: since you plan production on a daily basis you want your monthly forecast spread out on a daily basis throughout the month. Distribution of planned independent requirements can help you achieve this.

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Forecasting – Copy history

In forecasting it is fair to say that most forecast models only sensibly apply to high volume materials and that for low volume materials (although specific models exist)more manual intensive forecasting practices apply. A lot of customers prefer to use historical data one on one for the future predictions: May 2008 – 120 boxes sold hence May 2009 -120 boxes sold, June 2008 – nothing sold hence June 2009 also nothing sold, and so on. In a lot of situations it is desirable to manually adjust some of the forecast values. So if you wish to use last year’s actuals as your forecast for the upcoming year you can do the following:

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MD04 – Export planning to Excel

Sometimes a planner wishes to share the planning status of a particular material with colleagues or partners that are not SAP users. In this case it is useful to export the planning overview to Excel and perhaps pimp the lay-out with some colorful headers.
To do this -from within MD04 or MD07- go to Menu > List > Variable Print.
MD04 Print variant

MD04 - Variable Print

Immediately a new overview opens up that may look less attractive than the overview you are used to. On the screen ‘Print list – variable’ you can change the lay-out and save it as a variant like you are used to in standard SAP reporting.

MD04 printlist lay-out

MD04 printlist lay-out

To get the best Excel results export the report directly to an Excel table, as opposed to first store it as a local file and then open it in Excel. This way the lay-out is optimized for direct filtering and sorting.

This is all there is to it. Sometimes SAP life is that easy.

Lot-size for continuous production and process industry

A suitable lot-size for continuous production can be hard to come up with. Picture the situation of a mineral oils manufacturer that refines crude oil to 3 co-products. The planner wishes to control the process flow to align the production with demand (i.e. the refinery is not continuously refining at the same speed as it would in make-to-stock). Another requirement for ATP is that the production quantities are issued on a daily basis. Hence we want MRP to come up with weekly planned orders that are distributed on a daily basis. In abundance: 1 planned/process order per week, with equal quantities released per day.

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MRP processing keys

NETCH, NETPL and NEUPL are three fundamentally different ways to schedule your MRP run:

  • NETCH – Net Change Planning
  • NETPL – Net Change Planning within Planning Horizon
  • NEUPL – Regenerative Planning
MRP Processing Keys

MRP Processing Keys

I will elaborate on these three options and their workings:

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