Versions of Iowa Code 554.5104 - Formal requirements on LawServer 2023 Iowa Code 554.5104 – Formal requirements 2022 Iowa Code 554.5104 – Formal requirements 2020 Iowa Code 554.5104 – Formal requirements 2018 Iowa Code 554.5104 – Formal requirements 2016 Iowa Code 554.5104 – Formal requirements 2014 Iowa Code 554.5104 – Formal requirements. 2009 Iowa Code 554.5104 – Formal requirements