Check to see if you entered W-2, Box 12, D : Contributions to your 401(k) plan instead of DD: Cost of employer-sponsored health coverage.
To remove a form in TurboTax Online, see How do I view and delete forms in TurboTax Online?
To remove a form in TurboTax CD\Download, see How do I delete a tax form in the TurboTax CD/Download software?
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$6,000 is the contribution limit for an IRA contribution for someone under age 50, so check to see if you entered an IRA contribution under Deductions & Credits. If you made no traditional or Roth IRA contribution for 2019 and the IRA Contribution Worksheet is present, delete the IRA Contribution Worksheet.