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 vads_action_mode was not submitted to the payment gateway.|
The vads_action_mode field is mandatory. It must be present and correctly populated in the payment form.
Make sure the vads_action_mode field is submitted to the payment gateway.
|The value of the vads_action_mode field is not correct.|
The vads_action_mode field should be populated with the following values:
It must be capitalized, with no spaces or abbreviations (sending the INTER value to the payment gateway will cause an error).
|The vads_action_mode field has the SILENT value but the option is not subscribed.|
In order to catch the payment card data directly on the merchant site, first you have to submit the option to the merchant bank and, if it is accepted, sign up for the option on the payment gateway.
If the vads_action_mode field has the SILENT value, the payment gateway returns an error.