This page outlines the common error codes and resolutions you may encounter using the AtData's APIs.

Codes in the 2xx range usually indicate success. Codes in the 4xx range indicate an error that occurred based on the information provided (e.g., a missing parameter, etc.), and codes in the 5xx range indicate an internal error.

Code	Description
200	Request OK.
400	Bad request. Some part of the request was invalid. The response body will give further explanation as to what the problem is. Usually, this means the email address was invalid, some of the parameters were not URL encoded, or no parameters were passed.
401	Unauthorized. Either the `api_key` was missing or invalid.
403	Access denied. Your query limit has been exceeded, or the API key is not associated with any available response section.
429	Too many requests. Rate limits have been exceeded. If you call the API more than 500 times per second, you will receive this error.
500	Internal server error. Please contact support.
502	Bad gateway. The API is not available. Please try again later or contact support.