Source: Schema.org v30.1 vocabulary. Official customer property definition.
What does customer mean?
Party placing the order or paying the invoice.
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