a - The business use percentage of this asset varied during the years I owned the asset
Why? I ask, because if the TTX program has tracked it correctly, then this would not apply. Why did the percentage of business use vary in some years? I also suspect you are not quite interpreting that correctly, which is quite possible based on the lack of clarity the program provides.
b - The asset was a rental, ...
Read the entire statement - not just the first four words. The last three words of the statement clarify it.
This asset was a rental, a home office or a home office improvement *WITHIN A HOME*.
So was the asset a room you were renting out within your home? Or a home office?
Now in the Sale of Assets/Deprecation section, select the asset to edit it. That first screen is "Review Information". On that screen is the business user percentage 100%? Has it always been 100% business use since you placed the asset in service? If not, why not?
Again, the program doesn't clarify these things. But just because it hasn't been 100% business use, does not always preclude you from reporting this sale in the rentals section. (Yes, there are some scenarios that do)
