Solution : https://service.sap.com/sap/support/notes/173699 (SAP Service marketplace login required)
Key words :
'total quantity' field remains empty, additional key words scheduling agreement, afs line entry field, scheduling agreement schedule, change mode, program error, solution implement, purchasing, prerequisites, correction
Related Notes :
171773 | ME38 No update for total qty in line entry for del. sched. |