Normal reply. Your request was successful.
Invalid credentials. The challenge you provided failed to validate. Check your secret key.
Inadequate privileges. The system administrator doesn't allow the requested action to be performed over the JSON API (reserved status code for future use).
Requested resource not found. This can imply that the backup record ID or the file you requested to download is not present in the system.
Unknown JSON method. The JSON method you requested is not known to the API server. Check for typos or whether you're using an obsolete method that has already been removed.
An error occurred. An unspecified error occurred while processing your request. More information will be provided in the data part of the response.
Not implemented. The method you requested is known but currently not implemented by the server. You can expect to see that code for deprecated methods before they are completely removed.
Remote service not activated. The system administrator has not activated the Akeeba Backup JSON API feature.