Source: Schema.org v30.1 vocabulary. Official availableChannel property definition.
What does availableChannel mean?
A means of accessing the service (e.g. a phone bank, a web site, a location, 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