A container for slots of time that may be available for booking appointments. A container for slots of time that may be available for booking appointments. If the element is present, it must have either a @value, an @id, or extensions External Ids for this item. Whether this schedule record is in active use, or should not be used (such as was entered in error). A broad categorisation of the service that is to be performed during this appointment. The specific service that is to be performed during this appointment. The specialty of a practitioner that would be required to perform the service requested in this appointment. The resource this Schedule resource is providing availability information for. These are expected to usually be one of HealthcareService, Location, Practitioner, PractitionerRole, Device, Patient or RelatedPerson. The period of time that the slots that are attached to this Schedule resource cover (even if none exist). These cover the amount of time that an organization's planning horizon; the interval for which they are currently accepting appointments. This does not define a "template" for planning outside these dates. Comments on the availability to describe any extended information. Such as custom constraints on the slots that may be associated.