SAP APO DP Stat Forecasting

Hi All,

My objective is to do accurate Demand Forecasting (using Statistical Forecasting models in APO) for products.

There are multiple planning levels - Product, Ship-To, Sold-To, Location.

I want to determine methodology that helps:

1) At what level to do forecasting?

2) How to determine Trend?

3) How to determine Seasonality?

4) How to segment the data (at determined planning level) and what method to apply for each segmentation?

If anyone has any documentation or experience to share, please share the same.

Thanks in advance.

Best Regards,

BH18