The IRS - not eFile.com - has rejected your return and you are required to make a correction about a Dependent's SSN.
Solution: Please sign in to your eFile.com account now and click on My Return in the upper left and review the IRS message on the right.
1. Sign in: https://mytaxes.efile.com/1040/SignIn/
2. Click on Federal Taxes and then Dependents. A return with a Dependent's SSN has been filed for this tax year. Review your Dependent's SSN and make any corrections required.
If all SSNs are correct, then you need to print and mail your return. Please go to your My Account and download, print, sign and mail in your returns.
Otherwise make correction and re-eFile at no charge.
Here are the mailing addresses: https://www.efile.com/irs-mailing-addresses/
If you think your Dependent was claimed incorrectly by another person, please follow these instructions: https://www.efile.com/claiming-a-dependent-on-a-tax-return/#custodial
If you have questions, please contact us as soon as possible so we can assist you with your Tax Return.