API Errors

Newline support a number of error responses to help Clients get to the bottom of an issue with API usage. Before digging into the details below, please note a couple of key points:

• An error code provided in the format of a number in the thousands (ex. 1000, 2005, 11001, etc.) are synchronously provided by Newline, and the formatted error message is standard. Please see our noted example in the Error Detail and Resolution guide.
• An error code provided in a different format (ERR050, R09, etc.) is a failure code. These codes are not provided as an error response to an API request, rather they are provided in a Transaction object with a failed status as they are provided in the event the receiving financial institution or network has rejected the Transaction.

Please be sure to reach out to your Newline Specialist with any questions about the below codes.

🚧

Please note that the terminology and error codes used in the Newline API Guides differ from those found in the Card Issuing Sponsorship Guides.

While both sets of documentation pertain to related services, they employ distinct naming conventions and error code formats. As such when referring to either guide, ensure that you are using the appropriate definitions and error codes specific to the guide in question to avoid any confusion or misapplication of information.