Source: Schema.org v30.1 vocabulary. Official evidenceOrigin property definition.
What does evidenceOrigin mean?
Source of the data used to formulate the guidance, e.g. RCT, consensus opinion, etc.
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