error 91

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:

The format of the field is incorrect.

The vads_ext_info field is a customizable field allowing to add additional details to the confirmation e-mail sent to the merchant and to the IPN URL. It must consist of alphanumeric and special characters (except “<” and “>”).

Check that the value entered in the form is correct.