It's hard to say for certain just by those numbers, but it sounds like there is some other itemized deduction that is not conforming.
If you'd like, you can share with us a redacted secure copy of the numbers in your return and I can take a closer look.
In TurboTax online you do this by going to the menu on the left from any page in your return and selecting "Tax Tools" and then "Tools". In the pop up box that comes up select "Share my file with an agent".
This will produce a token/code. Return here and paste that token so I can then pull up the data.
If you're in TurboTax desktop this option will be under the "Online" menu.
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