SAP What is # 7 - What is Forward Overlap ?

What is #7 will look at the "FINE TUNING" of a Lot size rule such as "Lot for Lot" or sometimes just referred to as L4L. The L4L lot size is also a static lot size key similar to the FX lot size key. 

Now we attempt to create a new lot sizing rule called "Z8" and NOTICE that I have set the "OVERLAPPING" field to "+" described as Forward overlapping by the cycle time.

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In the MRP view below, i switch to this new lot sizing rule "Z8", retain the fixed lot size of 100, BUT I set the TAKT time to 2.  The TAKT time is the Cycle time mentioned in the configuration of "+" earlier.
I have also set a maximum Lot size of 250 per supply.

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The MRP results below shows 2 supplies but the supplies are forward overlapped by 2 days.
The 2 reservations are 2 days apart with a maximum of 250 imposed for each supply.

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CONCLUSION: Lot-size rules can be FINE-TUNED with several parameters provided by SAP. In this example; the Forward Overlap parameter is one of the many FINE-TUNING parameters available.

APPLICATION: In this case, I did a forward overlap "+" with a 2 day TAKT-time or Cycle time so that the supplies are staggered across 2 days. There are cases where the demand is grouped using a lot size key like weekly or monthly for planning or production purposes but the supplies will be staggered across several days to feed the production (especially repetitive manufacturing) or long-production run situations.

CAUTION: Consider the use of combining these fine-tuning parameters by creating a new lot-size key. Test them thoroughly before use.
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