Function Modul Documentation
Convert Currency Key Figures
Do currency key figures need to be converted? Currency key figures are always stored in the database with 2 decimal places. For the output, these amounts have to be converted into the proper format in accordance with the decimal places definition in TCURX.Because the converted currency is written to an amount field that only has two decimal places, currency conversion for currencies with more than two decimal places here causes rounding errors.
See also note 2085929 where you can find a simple example.