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The purpose of this page and its child pages is to explain the basic settings and the functionality of the availability check in ERP systems.


ATP check on the basis of ATP quantities.

Availability Check in ERP

The ATP quantity (ATP = Available to Promise) is calculated from:

    • the warehouse stock,
    • the planned inward movements of stock (= receipt elements), such as planned orders, production orders, process orders, purchase requisitions, purchase orders,

    • the planned outward movements of stock (= issue elements), such as sales documents, deliveries,
    • and reservations.