I filed a 2019 tax return with a small business. I depreciated a piece of business equipment as a seven year property. I entered the incorrect basis for the equipment. I corrected the amount (in the program) and adjusted the section 179 deduction so total business income did not change. The adjusted gross income did not change and the tax did not change from the originally filled return. Is it necessary to file a amended return and if so will I have to mail it in?