Solution : https://service.sap.com/sap/support/notes/333768 (SAP Service marketplace login required)
Key words :
additional key words atp, include program fv45ef0v_vbep_bmeng_upd_hpos, category 'include program', sales order created, program error, area 'sales, backorder processing, confirmed quantity, schedule line, product selection
Related Notes :
| 506965 | Undesired quantity changes during product selection |