TurboTax Form 1099-R follows the IRS approved Form 1099-R - https://www.irs.gov/pub/irs-prior/f1099r--2019.pdf
If your Form 1099-R is different and the box numbers do not match, then look at the box for descriptions and enter that amount in the same box as described on the TurboTax Form 1099-R.
