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 e-mail 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:
|Impossible to update a SEPA mandate with a credit card|
The token (vads_identifier) transmitted in your payment form is associated with a payment method of "mandate" type.
The value of the vads_payment_cards field does not correspond to a type of credit card.
Payment methods of "credit card" type cannot be used for updating tokens of "mandate" type