Custom program to update product and product location heirarchies - APO

Hi all,

We are planning to implement aggregated planning. As part of that we have a requirement to update product and product location hierarchies automatically in the future as and when a product is introduced into APO for locations that are part of aggregated planning? Please suggest / advice on how to go about implementing this custom program?

Also, please suggest ways to extend a product from the lower hierarchy to the higher hierarchy/ geographical area/ country using a custom program or by any other means

Regards

A