Versions of Utah Code 17D-4-305. Action to contest tax, fee, or proceeding -- Requirements -- Exclusive remedy -- Bonds, taxes, and fees incontestable on LawServer 2023 Utah Code 17D-4-305. Action to contest tax, fee, or proceeding — Requirements — Exclusive remedy — Bonds, taxes, and fees incontestable 2022 Utah Code 17D-4-305. Action to contest tax, fee, or proceeding — Requirements — Exclusive remedy — Bonds, taxes, and fees incontestable