No not from that. It's saying your dependent's ssn was already accepted on another return. Could they have filed their own return? Or on the other parents return? Or maybe someone accidentally filed their return wrong and entered your dependent's ssn by mistake.
You will probably have to mail your return this year and let the IRS figure it out.
How to mail a return from the Online version
https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...
Be sure to attach copies of your W2s and any 1099s that have withholding on them. You have to mail federal and state in separate envelopes because they go to different places. Get a tracking number from the post office when you mail them for proof of filing.
Where to mail federal paper returns
https://www.irs.gov/uac/where-to-file-paper-tax-returns-with-or-without-a-payment
AND DON'T FORGET TO SIGN IT IN INK!
