Numeric currency code to be used for the payment, in compliance with the ISO 4217 standard.To use a currency other than euro (978), you must request the activation of the "currency conversion" option.
To use a currency during a payment, you must have a MID created in this currency. The acquirer provides the MID to the merchant with the supported currency(ies) and the gateway takes this information into account when creating a MID.
Input and output field, returned in the response (IPN and Return URL).
* Under conditions.