Error codes

Affirm uses HTTP response status codes to indicate the success or failure of your API requests. If your request fails, Affirm returns an error using the appropriate status code.

In general, there are three status code ranges you can expect:

👍

2xx success status codes confirm that your request worked as expected.

🚧

4xx error status codes indicate an error because of the information provided (e.g., a required parameter was omitted).

❗️

5xx error status codes are rare and indicate an error with Affirm's servers.

Some 4xx errors that could be handled programmatically include an error code—a short string with a brief explanation—as a value for code. Below is a list of possible error codes that can be returned, along with additional information.