ISO/IEC 27001 and 27002 (International Standards Organization/International Electrotechnical Commission)(International standards for ISMS (Information Security Management Systems))(10 sections known as clauses and 4.0 to 10.0 are mandatory)(Clause 6.0 requirements are also called Annex A which has 14 sections and 114 clauses)
https://www.itgovernance.co.uk/blog/iso-27001-the-14-control-sets-of-annex-a-explained
https://www.isms.online/iso-27001/requirements-controls/