Affectation import issue

Hello Babynus,

I'm trying to import affection to mass configuration, I have affected 1 user to 1 project, export it and by cut and past dupplicate affectation for all user I have.

in column "ou utilisateur" I have cut and past the user exported by user export

When I'm trying to import the new file the tool reject me by this :
Contrôles invalides.

le champ 'ressource ou contact ou utilisateur' est obligatoire
le champ 'projet' est obligatoire

Do you think Why?

Thanks
Thierry,