Solution : https://service.sap.com/sap/support/notes/351428 (SAP Service marketplace login required)
Key words :
additional key words transactions, rule-based atp, source code corrections, sales order exist, sales order exists, /sapapo/bop_updatebackorder processing, sales order, backorder processing, /sapapo/bop, /sapapo/bopi
Related Notes :
375193 | Backorder processing: Composite SAP note on posting |
330298 | APO backorder processing for sourcing items |