Solution : https://service.sap.com/sap/support/notes/570935 (SAP Service marketplace login required)
Key words :
quantity-based overhead rates, field symbol <input_field>, overhead rates, overhead rate, protected field, edit percentage, costing sheet, conversion exits, 'profit center', terms sapl0coe
Related Notes :
| 126551 | Composite note: Customizing of costing sheet |