Solution : https://service.sap.com/sap/support/notes/439230 (SAP Service marketplace login required)
Key words :
additional key words costing sheets, general customizing maintenance tool, quantity-based overhead rates, change existing overhead rates, performance reasons delete, standard maintenance interface, error 'time periods &, diverse selection functions, overhead rates valid, overlapping validity periods
Related Notes :
126551 | Composite note: Customizing of costing sheet |