def METHOD_NAME(test_client, db_session, auth_headers):
    batch_size = 5
    parties = PartyFactory.create_batch(size=batch_size, person=True)
    parties[0].delete()
    party_guids = [str(party.party_guid) for party in parties]
    party = PARTY
    payload = {'party_guids': party_guids, 'party': party}
    post_resp = test_client.post(
        '/parties/merge',
        data=json.dumps(payload),
        content_type='application/json',
        headers=auth_headers['full_auth_header'])
    assert post_resp.status_code == 404