If you are looking at an income summary screen or review screen those show the full amount as income and lump a lot of stuff together. You need to check the actual 1040 form and make sure it’s right. For 1099R check 1040 line 4b or 5b for any taxable amount. If it was a rollover it should say ROLLOVER by the “b” line.
Code G is a direct transfer and not taxable.
