ISO 13616-1, Financial services – International bank account number (IBAN) – Part 1: Structure of the IBAN, specifies the elements of an international bank account number (IBAN) used to facilitate the processing of data internationally in data interchange. It is complemented by the soon to be published ISO 13616-2, Financial services – International bank account number (IBAN) – Part 2: Role and responsibilities of the Registration Authority, which details the procedures for registering IBAN formats and the data elements that make up the registry. Read more below....
See the full release on the ISO home site here: https://www.iso.org/news/ref2560.html. Also, please see the article, "What is IBAN?" from March 2020 posted to the Articles section of this TC68 website: https://committee.iso.org/sites/tc68/home/articles.html