@user17714495370 Waiting for your son to amend his return will not help you e-file this year at all. Your choices are to file your return that claims him as a dependent by mail --- since mailed returns are not rejected. Or get an IP PIN to try to e-file. Either way, his amended return will take four or more months to be processed and will not be in the system in time for you to e-file.
GET IP pin in order to e-file if your dependent’s SSN was claimed on another return
https://www.irs.gov/newsroom/irs-takes-steps-to-help-prevent-refund-delays-by-accepting-duplicate-de...
https://www.irs.gov/identity-theft-fraud-scams/get-an-identity-protection-pin
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
