Spouse without SSN/ITIN

Hello,

I got married after I moved to my home country. So I never brought my wife to US, but as of Dec 31 2016 I'm married. So I'm filing returns as a married person, and have included my wife's details.
Now as we didn't return to US after marriage, she never got a SSN/ITIN. And this is stopping me from completing my return process. Please advise what should be done is such a case.