Solution : https://service.sap.com/sap/support/notes/214374 (SAP Service marketplace login required)
Key words :
additional key words formula editor, formula editor, formula builder, ' rule editor, create/change, -field validations, date fields, syst-datum, bkpf-budat, bkpf-bldat
Related Notes :
| 301265 | Problems when entering literals with Formula Editor |
| 167634 | Conditions cannot be edited with the formula editor |