I also cannot double click the box to link Schedule C to the form. No suggestions have worked. This is unnecessarily frustrating.
Once you have deleted the 1099-NEC that is not linked to your already created (I'm assuming) Schedule C, you need to enter it through your Schedule C rather than as a 1099-NEC on its own.
To do this in TurboTax Online you can follow these steps:
I am facing the exact same issue and am still stuck. I have entered all my 1099-NECs but the review screen at the very end won't let me link to anything, ie when I click in the field, there is no pull down/files to choose from. So it looks like a schedule was never created? Is there a way to see what file have been generated (in the background) as I go through Turbo Tax to see if there is a Schedule C somewhere?
From @GloriaL
Currently, there is a known issue when using TurboTax Online that is related to the program asking you to double-click to link to Schedule C.
You can review the information below for steps to possibly solve the issue.
Income reported on Form 1099-NEC must be reported on Schedule C, the program is trying to link these two forms together to be sure that it is reported correctly and on the right form.
Revisit the section where you entered the Form 1099-NEC if you entered it on its own and delete that entry, by following these steps:
This will bring you a summary of all Form 1099-NEC that you have entered. Click Delete or the Trash can icon next to each one.
Next, you will re-enter the Form 1099-NEC as part of the Schedule C so that the income is reported directly as part of your Business Income and Expenses and within the correct form and section of your return.
Follow these steps to go to the Schedule C section of your return:
If you already have created a Schedule C in your return, click on edit and go to the section to Add Income. This is where you will re-enter the Form 1099-NEC.
If you do not already have a Schedule C in your return, follow the prompts and enter the information about your work/business for which you received the Form 1099-NEC. Then continue through that section to Add Income and enter the Form 1099-NEC along with any additional income you received for that business.
Once you have completed this, the error should be eliminated.