Solution : https://service.sap.com/sap/support/notes/322985 (SAP Service marketplace login required)
Key words :
additional key words va01, attached source code corrections, confirmed schedule line, schedule line, confirmed quantity, confirmed quantity = 0, sales unit, sales order, vbap-vrkme, vbep-bmeng
Related Notes :
356300 | ATP: Change of shipping condition in sales order |
352064 | ATP: Deletion of reason for rejection in sales doc |
97115 | Change in sales unit - no confirmation |