Source: Schema.org v30.1 vocabulary. Official merchantReturnDays property definition.
What does merchantReturnDays mean?
Specifies either a fixed return date or the number of days (from the delivery date) that a product can be returned. Used when the [[returnPolicyCategory]] property is specified as [[MerchantReturnFiniteReturnWindow]].
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