Field help (ECARCOURDA) 

In the currency exchange rate table, several exchange rates can be entered (see Currency exchange rates). It is possible to select the type and date of the exchange rate to be retained for the valuation of the journals at the end of the process.

The Average rate type is used by the conversion variance process when no rate type management is defined at account level. Otherwise it is the rate type defined on the reevaluated account that is taken into account.

SEEINFO The default exchange rate is the period end date.