All Schema files in the OpenTravel Alliance specification are made available according to the terms defined by the OpenTravel License Agreement at http://www.opentravel.org/Specifications/Default.aspx. The OTA_BookingRuleNotifRQ is the message that sends the notification of the rules and restrictions affecting the availability status of the hotel. POS provides a mechanism to indicate the source of the message. The unique identifier element allows the trading partners to uniquely identify each BookingRuleNotifRQ, (i.e. the entire message) for tracing of transactions. Container for the individual RuleMessage(s). An OTA_HotelBookingRuleNotifRQ contains the booking rules for a single hotel. Hotel identification information are the attributes of this element. Container for the collection of Booking Rules for a given hotel or chain. Information on what the BookingRule Message applies to (i.e. the combination of inventory and rate codes) and the period of application. Container for the collection of Booking Rules which apply for the information indicated in the StatusApplicationControl element. The unique identifier element allows the trading partners to uniquely identify each BookingRuleMessage, for tracing of transactions. This element defines standard attributes that appear on the root element for all OpenTravel Messages.