def METHOD_NAME(rest_client, auth_token):
    """ SCOPE (REST): send a POST to create a already existing scope to test the error"""
    acntusr = account_name_generator()
    data = {'type': 'USER', 'email': 'rucio@email.com'}
    response = rest_client.post('/accounts/' + acntusr, headers=headers(auth(auth_token)), json=data)
    assert response.status_code == 201
    scopeusr = scope_name_generator()
    response = rest_client.post('/accounts/%s/scopes/%s' % (acntusr, scopeusr), headers=headers(auth(auth_token)))
    assert response.status_code == 201
    response = rest_client.post('/accounts/%s/scopes/%s' % (acntusr, scopeusr), headers=headers(auth(auth_token)))
    assert response.status_code == 409