Are you saying that you filed your 2018 tax return with a section 179 deduction and the IRS subsequently denied the deduction?
If so, does the asset qualify for the post September 17, 2017 special depreciation allowance? See IRS publication, page 1, first column.
Both of these features of the tax code would have to be taken on the 2018 tax return because I am assuming that you acquired the assets in 2018?
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