If the mistake you made is keeping someone else from claiming the dependents from e-filing---that mistake is un-fixable by amending your return. They cannot e-file this year. A return claiming the same SSN now has to be printed, signed and mailed no matter when you amend your return.
**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.**
