Source: Schema.org v30.1 vocabulary. Official newsUpdatesAndGuidelines property definition.
What does newsUpdatesAndGuidelines mean?
Indicates a page with news updates and guidelines. This could often be (but is not required to be) the main page containing [[SpecialAnnouncement]] markup on a site.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status