ESPP Form 3922 box 8

I sold ESPP in 2022 and after I enter in all the data that Turbo Tax asks, I go to forms and look at the Form 3922 that Turbo Tax completed.  I compare it to the actual Form 3922 I received and there is a different value in Box 8. I manually changed the Box 8 value, and my tax changed.  Since Turbo Tax doesn't ask for the value in Box 8, I'm not sure what to do.  Can you help?