Retirement tax questions

I will attempt to follow your advice.

1)I have entered the values from the 1099r. The gross distribution in box 1 is NNNN

2)I have distributions other than RMD. So I check the box "Part of this distribution was an RMD"

3)Following your advice, when I get to the question: "Enter below how much of NNNN received applies to the RMD?"  I enter the box 1 value NNNN. 

 

TT will not let me go forward. It is unwilling to let me take the whole amount if I say it is only partial RMD.

What do I do next?