Message:    "Tier name must be in uppercase",
		StatusCode: http.StatusBadRequest,
	}
	// error returned when remote tier bucket is not found
	errTierBucketNotFound = AdminError{
		Code:       "XMinioAdminTierBucketNotFound",
		Message:    "Remote tier bucket not found",
		StatusCode: http.StatusBadRequest,
	}
	// error returned when remote tier credentials are invalid.
	errTierInvalidCredentials = AdminError{