As per the title.
Provided example in README has paymentRequest.currency instead of paymentRequest.currencyCode.
const paymentRequest = new PaymentRequest();
paymentRequest.amount = 2;
paymentRequest.currency = Currency.EUR; // should be paymentRequest.currencyCode = Currency.EUR
paymentRequest.orderChannel = OrderChannel.INTERNET;
When following the example in the README, the server responds with
The server respond with {"responseCode":"12","errorFieldName":"currency"}.
Correcting the example would be helpful.
Regards