Thanks @AmyC .
Here's what happened: I discovered that the 2019 contribution was in excess before filing my 2019 return. I therefore reported the corrected amount on the 2019 return and removed the excess contribution in 2020 (hence the 1099-R showing the removed amount as a gross distribution for 2020). Do I need to take any further action, such as amending my 2019 return?
