Solution : https://service.sap.com/sap/support/notes/97118 (SAP Service marketplace login required)
Key words : 
additional key words local currency, symptom insignificant differences occur, attached advance corrections, unnecessary currency conversion, slight differences, statistics currency, document currency, documents / invoices, system carries, rounding errors
Related Notes : 
       
| 204130 | SIS update: Collective note |