Planning in snp and ppds

[former_member691361]

Hi,

In our scenario, we are planning to put 30 days as PPDS horizon.

We will be running SNP and PPDS planning everyday. SNP for first 50 days in daily and rest in weekly bucket.

How we can map this planning? Do we have to give offset for conversion heuristic before the PPDS run for converting the SNP orders to PPDS orders?

If I set PPDS horizon as 30 days, first when SNP heuristic run, all the demands in PPDS horizon will be combined and will create a SNP planned order on the 31st day. Now while running PPDS heuristic if we dont have a conversion heuristic with offset 1 day, how the SNP planned order will be converted to PPDS order?

How we can get the exact planning in this scenario or planning working in the horizons?

Thanks,

Prash

[mwallace]

Hello Prash

Normally the point of the PPDS horizon would be to have a fixed period where plans don't change.  The fixed period should be as short as possible and somewhat equal to your supplier/manufacturing lead times, or resource constraints.

Outside of the PPDS horizon you want to be as flexible as possible and plans can be created and move.

Normally the job of the PPDS/SNP planner is to smooth the plans SNP plans that are created on the first day after the SNP horizon and bring forward individual plans whenever possible to meet changes in customer demand.  The rest of the plans are pushed back to smooth capacity.

An alternative to this is to use the Optmizer or CTM where you have finite resource capacity.