SPOUSE NOT ELIGIBLE FOR SSN

I CAN'T CONTINUE DUE TO THIS MESSAGE " Just a sec, we found a few things to fix before we can start
Let's go to Personal Info and fix:
• Missing birthdate(s)
• Missing Social Security numbers
• Two people having the same Social Security number
Once that's done, we'll be ready to give Health Insurance another start (no rush)."
WHAT TO DO IF MY SPOUSE SHE IS NOT ELIGIBLE FOR SSN?