How do I correct a mistake if I already submitted return? Duplex 50% yet entered half tax, interest.

[Jimesa]

To correct a return that you have already submitted, you will need to complete an amendment after the return is accepted. Should the return reject for any other reason, when you go in to correct the reason for the reject, you can make this correction as well. Please see the below for more information on how to complete an amendment:

How do I amend a 2017 return in TurboTax?

https://ttlc.intuit.com/replies/6603004