UserPrincipleName is invalid

 Hi

I try to create an user from ServiceNow thru restapi with unverified domain in AZURE AD and got this error.

did is impossible to create user with unverified domain for userpricipalname?

here the error

"error": {
    "code": "Request_BadRequest",
    "message": "Property userPrincipalName is invalid.",
    "innerError": {
      "request-id": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "date": "2019-04-16T08:38:26"
    },