HOW REPORT FORM 4797 WITH FORM 6252

[Winnie5911]

Hello,

I have an installment sale of a commercial building that was a rental.  I entered the sales price, closing cost and amount allocated to the land.  My form 6252 is calculating good with current year income $859.  Now form 4797 page 2 is being populated with only the building cost, prior depreciation... with gain of $29k line 24, 26c, 30 & 32.  With this, the person is being taxed on the full amount, though they have not been paid.  How do I fix this?

Note first year software user.

Thanks,

Windora