Status Codes

When you call any of the REST API operations for AI and ML services, the response returns one of the standard HTTP/HTTPS status codes defined in the following table:

HTTP Status Code	Description
200 OK	The request was completed successfully.
400 Bad Request	The request could not be processed because it contains missing or invalid information (such as a validation error on a parameter or a missing required value).
401 Unauthorized	The request is not authorized. The authentication credentials must be added or validated.
403 Forbidden	The user can't be authenticated. The user does not have authorization to perform this request.
404 Not Found	The request includes a resource URI that does not exist.
405 Method Not Allowed	The HTTP method specified in the request (POST) is not supported for this request URI.
409 Conflict	The request can't be completed due to a conflict with the current state of the target resource.
500 Internal Server Error	The server encountered an unexpected condition that prevented it from fulfilling the request.
501 Not Implemented	The server either does not recognize the request method or is unable to process the request.
503 Service Unavailable	The server is not available at the moment because it is either overloaded or experiencing downtime.