if err == nil {
		return noError
	}

	var apiErr APIError
	switch e := err.(type) {
	case policy.Error:
		apiErr = APIError{
			Code:           "XMinioMalformedIAMPolicy",
			Description:    e.Error(),
			HTTPStatusCode: http.StatusBadRequest,
		}
	case config.ErrConfigNotFound:
		apiErr = APIError{
			Code:           "XMinioConfigNotFoundError",
			Description:    e.Error(),