If your return was rejected due to needing Form 8862, you will need it in order to send your return. Form 8862 is the form that the IRS requires to be filed when the Earned Income Credit or EIC has been disallowed in a prior year. TurboTax will help you fill out your 8862 form.
See the TurboTax FAQ below that explains how the form is entered into TurboTax:
https://ttlc.intuit.com/replies/3300678
