How to screen a tenant without a social security number?

[Farnaz Z.]

I have an applicant who's going through a rental screening process A.T.M. His girlfriend, in her early 20s, does not have SSN nor does she have an ITIN and she's unemployed so she cannot get screened. The guy is meeting the rental criteria income wise. They're currently renting in Denver under only the guy's name but since the girlfriend is pregnant, they need to move to a bigger place. What's the best way to navigate this situation regarding the application process as well as the lease administration? TIA for your guidance!