If the mistake was on your end, and you have already e-filed your return, you would need to wait until your return is either Accepted or Rejected. If it's rejected, you can fix the rejection and refile. If it has been accepted, you would need to fix the issue and then amend your return. If you believe the TurboTax software that you used made a mistake, you can use the link provided below to find out more about TurboTax 100% Accurate Calculation Guarantee:
What is the TurboTax 100% Accurate Calculation Guarantee
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