def METHOD_NAME(mock_indico, app, auth_headers_for_superuser):
    mock_indico_id = '848989'
    with app.test_client() as client:
        resp = client.get('services/indico/{}'.format(mock_indico_id), headers=auth_headers_for_superuser)
        assert resp.status_code == 503
        assert resp.json['message'] == 'External API replied with an error.'