I guess the graph POST /teams fonctionnality only has been tested with en-us tenants as a french tenant Graph API will come back with an error saying : Failed to execute Templates backend request CreateTeamFromTemplateRequest. A template with id '[id]' and locale 'en-US' could not be found.
when the param "template@odata.bind" is set to our custom id template. As we can deduce, its looking into an en-us side and our resources are not en-us!
