Problem: The IRS has rejected your return - not eFile.com - because the primary SSN can not be the same the dependent SSN on another IRS return filed for this tax year.
Solution: Let us help you turn this into an IRS acceptance. Sign into your eFile.com account: https://mytaxes.efile.com/1040/SignIn/, and click Name and Address on the left side menu. On the right side answer this question: Can you be claimed as a dependent by someone else?
Answer Yes here if somebody else e.g. a parent has claimed you as a dependent on their return. Save and Continue and follow the screen instruction to re-efile your federal and state returns for free. You can do this as often as it takes to get accepted. However, should you have answered this with Yes and you keep getting rejected for any reasons, PRINT your return(s) - IRS and State(s) - and MAIL it in on time here: https://www.efile.com/where-to-mail-tax-return-form-irs-mailing-address-for-refund/
After that, contact the IRS at 1-800-829-1040 and/or State and discuss your tax return in more detail. If the IRS does not accept your return, because a return under your SSN has been accepted by the IRS ask yourself if you have already filed elsewhere or if you have data security concerns please visit: https://www.efile.com/tax-return-identity-theft-and-refund-fraud/ . If you have already filed a return and are trying to change or correct it, please visit https://www.efile.com/tax-amendment/. Contact us with further questions or assistance at https://www.efile.com/tax-service/contact/efile-contact/.