Solution : https://service.sap.com/sap/support/notes/316755 (SAP Service marketplace login required)
Key words :
additional key words cancellation field, prerequisites program error solution, customer-defined key figures, customer-defined fields, key figures, key figure, inversion field, 'storno' field, cancellation records, cancellation values
Related Notes :
| 382779 | Cancellation field in the DataSource maintenance RSA6 |