Retirement tax questions

Can anyone explain this issue to me as well? I’m seeing this years later but I’m having the same confusion as the original poster. 

I am doing a backdoor Roth and entering my IRA 2021 end of year value and it’s asking me “include any distributions you made in 2020. The amount you enter must be at least the amount of your distributions.”

 

Why is it asking about 2020 distributions? I am currently doing my 2021 taxes.

Thanks.