The adoption credit carryforward is on Form 8839. You can delete this form if it is no longer needed on your return. 

To remove Form 8839 and the adoption carryforward, please follow the steps below:

1. Open your tax return.
2. Search for adoption credit and select the Jump to link.
3. On the Did you pay any adoption expenses in 2020 or earlier? or the Credit for Adoption Expenses screen, answer No.
4. Then, click on Tools.
5. Click on Delete a Form. 
6. Scroll down to Form 8839 and click Delete. 

Thank you. I did what you said and it doesn't ask me if I paid. It goes straight to Adoption Carryforward nd telling me I have an adoption carry credit forward, which I do not. Then it tells me to enter my sons information again. It says I must enter the information about my kids so I can use the credit this year. 

Please try deleting the form without going to the Adoption Credit Section:

Sign in to your online account

Continue working on your return

Click Tax Tools on the left side bar

Click Tools on the drop-down

Click "Delete a form" on the “Tools Center” screen

Scroll down the list and find Form 8839 then click Delete

Confirm the delete

Yea... this doesn't work... Turbotax really needs to address this issue..

 To Delete a form:

1. Select Tax Tools from the menu on the left

2. Then select Tools

3. When the new menu pops up select Delete a Form

4. You will see a list of all the forms in your return

5. Find the form that you want to delete

6. Select the Form

7. Click Delete on the right  

Tax forms are interconnected.  While you are on this screen don’t start deleting forms you don’t recognize.