Solution : https://service.sap.com/sap/support/notes/725889 (SAP Service marketplace login required)
Key words :
updating tables but020, attached correction instructions, execute report rfsbpbut021, parallel update reason, report rfsbpbut021, update termination, parallel maintenance, terms rfsbpbut021, time-independent, time-dependent
Related Notes :
517102 | BP_ADU: Composite SAP note time-dependent address usages |