Why is authoize.net returning response code Ok I00001 "Successful" however, the customers credit cards are still getting declined?

Question

I have a client that I did an Authorize.net AIM system for. When the transaction goes through, the response contains the result code "Ok", the response code I00001 and response message of "Successful". Sometimes I will also get an authcode back in the response as well, but it will still show declined in the Authorize.net portal. Is this an issue with Authorize.net or am I looking for the wrong things in the response codes?

Answer 1

That response means the transaction was completed successfully. It does not mean the card is approved.

In other words, Authorize.Net communicated the transaction to the merchant account provider without error and received a proper response. That response may indicate a successful payment was made or the card was declined.