Solution : https://service.sap.com/sap/support/notes/165270 (SAP Service marketplace login required)
Key words :
additional key words kah1, error message k0120, program error made, cost element groups, existing controlling area, controlling area &, controlling area, account groups, special characters '+', create charts
Related Notes :
| 308737 | Allocation struct: K0120 COarea & does not exist |
| 210166 |