This typically arises when there is an issue with the credentials that have been provided. The gateway throws an error message when attempting to transact or add a payment method to a customer in Stax Bill. The error message is what Moneris sends back to Stax Bill.
- Ensure the provided credentials are in the correct case (upper and lower) as they are case-sensitive.
- Check to make sure that the country of your Moneris account matches the country used to configure the credentials.
- There is such a thing as a Canadian account that transacts in USD, for which you will need to configure a "Moneris - Canada" account in Stax Bill, but label it and request routing for USD transactions in Stax Bill to go to that gateway.