Your post is pretty vague----you mention the word "dependent" --- was it rejected for duplicate use of a dependent's Social Security number? If your dependent happens to be a teenager or student who recently filed their own tax return, it could be that the child did not mark that they can be claimed as a dependent, which would cause your own return to be rejected. Or....is there another parent or another person who might have claimed the child?
You can print, sign and mail your return and let the IRS sort out the duplicate use of a SSN or you can seek a IP PIN 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.**
