IRS Form 8971 and 8971 Schedule A is not supported by TurboTax. It is a stand alone form which is not part of a tax return.
IRS Form 8971 - https://www.irs.gov/pub/irs-pdf/f8971.pdf
IRS Form 8971 Instructions - https://www.irs.gov/pub/irs-pdf/i8971.pdf
