I think you are entering it in the wrong area. The rollover is on a 1099R and does not go in the contribution area (as it is not a contribution).
So first take the rollover to a Roth out of the IRA contribution area.
Then enter the 1099R as a rollover. There is no limit. This link may be helpful.
https://www.irs.gov/retirement-plans/plan-participant-employee/rollovers-of-retirement-plan-and-ira-...
To enter the rollover in TurboTax, go to:
To enter pension and annuity Payments (1099-R)
- Click on Federal Taxes
- Click on Wages and Income
- Click on I'll choose what I work on (if shown)
- Scroll down to Retirement Plans and Social Security
- On IRA, 401(k), Pension Plan Withdrawals (1099-R),
click the start or update button
- Enter this and then answer the questions it was rolled to a Roth IRA.
