Form 4562, "Basis for depreciation" of a rental property is showing 20% of the purchase price

I had to choose mail filing and now that I'm checking the PDF file I got to print and mail to IRS, I see the amount of (c) Basis for depreciation for Residential rental property in Section B of Form 4562 is 20% of the purchase price. The house was converted from personal use to rental on 10/2023, so not sure if it has something to do with it, or I entered something wrong. Shouldn't that be based on the full purchase price?