We are using EE3 3.1.37.3.P and are experiencing the following error during the payment processing of some registrants using the Authorize.net AIM payment gateway. I have not been able to test extensively but it appears it may be related to having multiple attendees on the registration.
Attention: your transaction was declined for the following reason(s):
This transaction cannot be accepted.
Response Code: 3
Response Subcode: 1
I generated a new API Login ID and Transaction Key and that seems to have fixed the issue. I had been testing payments through EE4 on a dev instance earlier today and had generated a API Login ID and Transaction Key for that. Not sure if or why that would have disabled the production site.
‘m not sure why that happened either, but it’s definitely at Auth.net’s end, as the error code refers to bad credentials.
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