In PRODUCTION mode, if your buyer gets an error message such as:
|An error occurred during the payment request, please make sure that the posted parameters match the ones specified in the documentation.|
It becomes impossible to make the payment and the transaction is definitively lost.
You will receive an email notification containing the form that the gateway was unable to process and the value of the invalid field.
We invite you to check the following reason(s) to resolve the issue:
|The field was not submitted to the payment gateway.|
The vads_sub_currency field is mandatory when creating a recurring payment and must be present in the payment form.
Make sure that this field and the currency are submitted to the payment gateway.
|The currency is invalid.|
The vads_sub_currency field present in the form is incorrect.
Make sure the field value matches the numeric currency code to be used for the payment, in compliance with the ISO 4217 standard (numeric code).
E.g.: 978 for euro (EUR)