This article will guide merchants, partners and developers through understanding how to read API and Transaction Response Codes.

API response codes can be found on the Authorize.net Developer Center. Examples of various API response code formats are provided, along with an option to download these response codes and suggestions.

API Response Codes

These are the top level response codes that will give a high level indicator of the status of the API request.

This code may be informational, beginning with a "1" prefix, e.g. "100004"..

Transaction Response Codes

For payment transactions, there is an additional level of response codes that provide detailed information about the status of the payment request. The transaction Response Code is a high-level indicator of the result of the transaction (e.g. accepted, declined, held for review). The errors list will give more detailed information regarding the payment request.

Response Code indicates the overall status of the transaction with possible values of Approved, Declined, Errored or Held for Review:

1 - Approved
2 - Declined
3 - Error
4 - Action Required (typically used for AFDS transactions that are held for review)