The credentials provided in the most recent document (MercuryPay Testing Guide and Script Library_FIS_Secure_03132020) indicate the HostedCheckout credentials for HostedCheckout POS and HostedCheckout eCommerce are as follows:
However using these credentials in our test environment is throwing a ResponseCode 100 – AuthFail (bad password or MerchantID). We haven't had any code changes that would have impacted this so I can only assume, based on the response, that the credentials we have and that are provided in the above linked document, are incorrect.
Attached is a screenshot of the credentials in question on page 22 of the document linked above.
If anyone can help provide the correct credentials or point me in the right direction, I would be most grateful.