That message will not prevent e-filing. If you are itemizing (mortgage interest isn't included if you take the standard deduction), check Schedule A to confirm your mortgage interest is included on Line 10 of Schedule A. This amount goes to your From 1040, Line 12 (standard or itemized deduction). If you are taking the standard deduction, or you have confirmed your mortgage interest is included on Schedule A, you can file your tax return; the Needs Review message is not an error.