def METHOD_NAME(
    api_client, organization, data_source, other_data_source
):
    signup_group = SignUpGroupFactory(
        registration__event__publisher=organization,
        registration__event__data_source=data_source,
    )
    other_data_source.owner = organization
    other_data_source.save()
    api_client.credentials(apikey=other_data_source.api_key)
    response = get_detail(api_client, signup_group.id)
    assert response.status_code == status.HTTP_403_FORBIDDEN