[ovirt-users] The problem with create VM

I began use ovirt recently. I tried create one VM on ovirt plateform. But I nerver start VM. I had the message like: L'hôte xxxxx.xxxx.fr n'a pas pu satisfaire le filtre Network de type interne car réseau d'affichage ${DisplayNames} manquant. I don't understand where is the problem. Could you help me? Thanks Anne