def METHOD_NAME(client, env):
    event, user, payment = env
    payment.info_data = {
        'payer': "Abc Def",
        'iban': "DE27520521540534534467",  # invalid IBAN
        'bic': "HELADEF1MEG",
    }
    payment.save()
    assert not payment.payment_provider.payment_refund_supported(payment)
    client.login(email='dummy@dummy.dummy', password='dummy')
    url = "/control/event/dummy/dummy/orders/1Z3AS/refund"
    r = client.post(url, {
        f"refund-{payment.id}": "23.00",
        "start-mode": "full",
        "perform": True,
    })
    assert r.status_code == 200  # no successfull POST
    with scope(organizer=event.organizer):
        assert not OrderRefund.objects.exists()