I filed my state tax return with North Carolina when it should have been filed in South Carolina. Wonder how to correct this.

First, you will need to complete a tax return for South Carolina.  You can do this in your existing program as follows:

1. Sign in to TurboTax. 
2. You should be able to see Your Tax Returns & documents  
3. Select show here. 
4. Select 2019
5. Select Add a state

This will allow you to add a state return.  Go to through the state interview sections and answer the questions as applicable to report your income in South Carolina.

You will then be able to try to electronically file your state return if you already e-filed your federal return. 

After you have completed your return for South Carolina and filed it, you will need to file an amended return for North Carolina showing you did not have anything to report there.

See the following link for instructions on how to amend your state return.

Steps to amend a state return