Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is only 50% because booking_uuid lacks a description, but the parameter is self-describing as the booking identifier. The description enriches it by specifying this must be an unpaid hold and that paid ones cannot be released, which compensates partially for the undocumented booking_uuid.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.