The Service Status Change Notification (SSCN) request message (ServiceStatusChangeNotifRQ) is used to notify the Order Management System of any change in status to Services within an Order. The status of a Service is used to track the ability of the Airline or Delivery Provider to deliver a particular Service, and/or track whether a Service has been consumed. This message may be triggered directly from a delivery process, but may also be triggered by an automated process, such as the expiration of a time limit in which a service was to be consumed within. The Service Status Change Notification message is used to advise the status of all Services (flights, flight-related ancillaries, ground Services etc.) throughout the lifecycle of the Service.