Solution : https://service.sap.com/sap/support/notes/1382401 (SAP Service marketplace login required)
Key words :
incoming order quantity, attached correction instruction, product allocation check, product allocation group, product allocation, cif processing, finish successfully, terms retry, /sapapo/qttab, /sapapo/dm_atp_update_qtvb
Related Notes :
1174199 | ATP: locking problem in product allocation during update |