Solution : https://service.sap.com/sap/support/notes/129164 (SAP Service marketplace login required)
Key words :
additional key words quantity correlation, error message vl123 'delivery group &, delivery group, program error, individual items, solution transfer, program change, deliverable, transferred, prerequisites
Related Notes :
138515 | VL0x: Delivery items deleted incorrectly |
52694 | Coll. note for quantity correl. in Rel. 3.0C-4.5B |