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 vads_order_id field contains special characters.|
The vads_order_id field can only contain alphanumerical characters and the "-" character.
If any other special characters are used (&, ;, @, etc.), the payment gateway will return an error.
|The length of the vads_order_id field must not exceed 32 characters.|
The length of the vads_order_id must not exceed 32 characters.
Otherwise the payment gateway returns an error.
|The length of the vads_order_id field is not compliant with the expected format.|
For some payment methods, the vads_order_id field is mandatory and must respect a specific format.