Solution : https://service.sap.com/sap/support/notes/494298 (SAP Service marketplace login required)
Key words :
attached program corrections, complete delivery, /3 sales order, apo system, order items, delivery group, terms correlation, availability check, atp reason, solution implement
Related Notes :
440179 | Global ATP in APO (Releases 3.0, 3.1) - Composite SAP note |
423564 | Delivery group correlation in APO |