If you have not already filed and would like to start over your return, you can use the Clear and Start Over tool. Here's how: https://ttlc.intuit.com/replies/4248526
If you have filed and would like to make changes to your return, you will need to wait until they are approved or rejected by the IRS and then you can amend. For more information on amending, please see the TurboTax FAQ below: https://ttlc.intuit.com/replies/3288565
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