Most errors are caused by an omission or an entry error by the user of the software.
If you agree with the notice you received from the state then pay the taxes owed. If TurboTax made a calculation error they will pay any penalties or interest back to you after you pay the state.
See this TurboTax support FAQ for the Calculation Guarantee - https://ttlc.intuit.com/community/charges-and-fees/help/what-is-the-turbotax-100-accurate-calculatio...
