Source: Schema.org v30.1 vocabulary. Official signDetected property definition.
What does signDetected mean?
A sign detected by the test.
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