Does TT Business have form 982?
If not, is there some worksheet for adjusting basis due to insolvency?
Here's a link to the forms availability table.
https://care-cdn.prodsupportsite.a.intuit.com/forms-availability/turbotaxbusiness_fed_windows_selector.html
I don't think the program supports the form.
If you're filing a 1065, Form 982 is filed at the partner level.