Fixtures were purchased in 2011 and never depreciated. Sold in 2020. Using ProSeries assets worksheet, I completed the Asset Information, asset type E1 Office furniture / fixtures I entered zero for prior year depreciation. I completed Dispositions. I don't see "Allowable depreciation", form 4797 (e) is blank, how do I fix this?

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Purchase price was $15,000, sale price $7,829 sold June 22, 2020.