Planned Order configuration

Hi

I am implementing PP in a steel mill with variant configuration.

The Scenario - The production will be done against sales orders as well as against planned orders created manually (for the forecasts).

The requirement is that, at the time of manually creating a planned order, configuration should be possible as it is possible while creating a Sales Order.

Is it possible in ECC?

APO is not in the radar and I can not use material variants as the number of material variants will be too huge.

TIA

Avinash