Product allocation

Hi,

I am working on SCM 4.0 APO system. My question is regarding product allocation. In R/3 there are confirmed orders for particular order for example 600. The allocation quantity is 500. When I check the plannig book for product allocation, total order quantity i.e. 600, does not appear in planning book.

I have checked the product allocation situation, it only shows incoming order quantity and not total order quantity.

If anyone has any idea why total order quantity does not appear in planning book?

Thanks

Regards

Jignesh