HTTP status codes

it is considered that the request was successful only if the status code is 200 regardless of the content in the body.
it is the programmer's duty to check the status code first and then to read the body

Code	Info	Details
200	OK.	Succesfull request.
400	Bad request	Request does not have a proper format or has not passed validation. Information about errors will be available in the body.
401	Unauthorized	The endpoint requires authentication.
403	Forbidden	The user does not have the necessary permissions to execute the request.
404	Not found	Not found.
405	Not supported	Invalid parameters. Only those in the documentation can be used
420	Deprecated	The called version is no longer supported.
429	Too Many Requests	Temporary error if request / ip limit is exceeded
503	Service Unavailable	The service is under maintenance. Temporary error.