Solution : https://service.sap.com/sap/support/notes/81125 (SAP Service marketplace login required)
Key words :
period end process convenience netting, field t8jz-pomact, additional key words, message class g4, selection screen blank, parameter 'billing month', process runs, selection screen, error message, billing month
Related Notes :
| 93554 | @3Z@ 4. collective oil fixes/transports after HP34 |