Solution : https://service.sap.com/sap/support/notes/354489 (SAP Service marketplace login required)
Key words :
system issues warning messagef5000 'period & adjusted, system date&2 = entered posting date, additional key words enjoy, 'basic data' tab page, posting date &'&1 = period, 'payment' tab page, fi enjoy transactions, system issues, posting date, warning message
Related Notes :
339666 | FB60: Document with initial vendor / G/L account |
338030 | FB60: message F5507 after document type change |
325595 | A tightened program check with posting |