"Independent requirements is not restricted to planning in SCM SNP. Planned independent requirements within the production horizon are planned in production planning and detailed scheduling in SCM PP/DS."
What does that means by data will be available n PP/DS?
Did APO System Generate Capacity Requirement? Is that what the system meant?
Answer:
There are two horizons in the product master - SNP production horizon and SNP stock transfer horizon. In your company if you are using both SNP and PP/DS then after the forecast is released to SNP, you will execute SNP and then for the short term you will execute PP/DS.
In such a scenario (where SNP is used for mid-term planning and pp/ds for the short term), you need to maintain the SNP production horizon (in case of in-house production) and stock trans horizon(for external procurement / branch to branch transfers) to define the boundary between SNP and PP/Ds. that is you need to specify till what day /week /month you need PP/DDS plan and for what time frame you need SNP plan. The SNP production / stk trans horizon is the horizon during which SNP will not generate any plan. That is if your stk trans horizon is say 10 days , then SNP will not generate any supply within this 10 days even if there is demand . Supply will be generated for the next 10 days only by PP/DS. SNP will generate supply only outside the production /stock transfer horizon.
As specified by SAP , your planned independent requirement is thus not restricted to SNP. That is if the demand is within the prod / stk trans horizon it is fulfilled by the pp/ds run and demands outside the horizon are planned by SNP.
With Transaction Code /SAPAPO/MC90 to release demand to SNP, you can release the FCST from APO DP to SNP for planning. You can execute the plan either SNP heuristic , CTM or optimizer.
As output of SNP planning can be use as a basis for making sourcing, deployment, and transportation decisions. So this is rough cut mid-term or long term capacity planning. In APO, we can also do the rough cut capacity planning The actual production is then planned in PP/DS.
Practically see the example below:
Our forecast horizon is 120 days. i.e. When I plan in Jan 2099, Feb, march, April, May forecast will be entered by sales in DP.
The data will be transfer to SNP (120 days data SNP horizon)
as independent requirement and production and STO qty is planned in SNP.
Then for Feb data (production planning horizon) is transfer
to PPDS for further processing for finite scheduling to get the correct
capacity evaluation and exact dates of production start and end.
