Solution : https://service.sap.com/sap/support/notes/135721 (SAP Service marketplace login required)
Key words :
additional key words transaction, attached source code corrections, prerequisites product allocation, discrete product allocation, product allocation quantities, order quantity occur, product allocation, order item, quantity conversion, unexpected confirmations
Related Notes :
149703 | Allocations: Confirmed quantities are ignored |
106611 | Allocations: Composite SAP Note from Release 4.0A |