OK: 200
CREATE: 201
ACCEPTED: 201
NO_CONTENT: 204
BAD_REQUEST: 400
UNAUTHORIZED: 401
NULL_VALUE: 402
FORBIDDEN: 403
NOT_FOUND: 404
NOT_ACCEPTABLE: 406
CONFLICT: 409
PAYLOAD_TOO_LARGE: 413
INTERNAL_SERVER_ERROR: 500
SERVICE_UNAVAILABLE: 503
DB_ERROR: 600