The IAF has been releasing mandatory documents for many years and we have been following the development of such documents @ the IAF Mandatory Documents (MD Series) as of May 2019 thread since 2008. About 3 years ago, in May 2016, I made a post about the release of the IAF MD19 document, titled IAF Mandatory Document For The Audit and Certification of a Management System operated by a Multi-Site organization (where application of site sampling is not appropriate). I know this to be a controversial subject in some areas, but this document is no longer available for download from the IAF website page where such documents are listed. No word (that I could find at the IAF website) about the reason for the document vanishing.