This type is derived from https://schema.org/PropertyValueSpecification, which means that any of this type's properties within schema.org may also be used. Note however the properties on this page must be used in preference if a relevant property is available.
Must always be present and set to
Descriptive help plain text for the field, which must not include HTML or other markup.
Display label for the field.
Specifies that a value for the field is required to proceed with the booking.
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