Typically, you should be able to leave those boxes blank but if not, try adding zero and run your review to see if this clears the issue.
If this does not help, it might be easiest to delete that Form 1099R and reenter the information.
Follow these steps to delete your 1099-R in TurboTax.
Once you delete the form log out and clear the cache before logging back in.
Can you please send a screenshot of the specific fields you're leaving blank? Please be sure to black out any confidential information.
Typically, you should be able to leave those boxes blank but if not, try adding zero and run your review to see if this clears the issue.
If this does not help, it might be easiest to delete that Form 1099R and reenter the information.
Follow these steps to delete your 1099-R in TurboTax.
Once you delete the form log out and clear the cache before logging back in.