Solution : https://service.sap.com/sap/support/notes/328623 (SAP Service marketplace login required)
Key words :
user option 'document date equals pstg date', additional key words fb60, post fi documents, system incorrectly posts, fi enjoy transactions, posting date, current posting period, parked document, posting period, current period
Related Notes :
339666 | FB60: Document with initial vendor / G/L account |