This error refers to missing mandatory fields in the Rental Schedule.Log in to HandiTax and Select the tax return.Double-click on the Rental Schedule.Check that all required fields have been completed. Related ArticlesHandiTax - GEN.XBRL01 The 'fter:LocalityNameT' element is invalid in HandiTaxHandiTax - Owner code blank or does not match this client's reference in HandiTaxHandiTax - Depreciation worksheet transferred to a Rental Schedule in HandiTaxHandiTax - Rental property schedule transfer to all owners in HandiTaxHandiTax - Allocating expenses in a split rental schedule in HandiTax