Solution : https://service.sap.com/sap/support/notes/190485 (SAP Service marketplace login required)
Key words :
additional key words characteristics groups, tables cufm / cecufm, function module ctcu_delete_atinn_from_group, function module cei1_delete_atinn_from_group, function group ctcu, function group cei1, characteristics group, delete characteristics, entries remain, note ensures
Related Notes :
188920 | Correction report CECUFM/CUFM f. deleted chrctrstcs |