I found I made excess contribution to traditional in December, 2019, and I can remove the excess contribution before tax due date in 2020. I did review the community discussion, and got some understanding: If I remove excess contribution, I will receive 1099R in 2021.
I just like to know
1. what code will be in box7 in 1099R I will receive?
2. Do I need file Amend for 2019 for the removal?