To
prevent fraudulent returns, the IRS will only accept each dependent's SSN once
in their e-file system. Because your parent's/dependent's SSN was used on your other parent's return (even though the other parent did not claim as dependent, their name and SSN was listed on the other parent's tax return), no
further e-files using that SSN will be accepted. You will need to print, sign, and mail in your tax return. Your return will be accepted if you paper file.
