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. This message is used to provide a notification of a new rate plan created for a hotel, and to synchronize the rate plan between systems for booking. POS provides a mechanisim to indicate the source of the message. The unique identifier element allows the trading partners to uniquely identify each RateAmountNotifRQ, (i.e. the entire message) for transaction tracability. A collection of RateAmountMessages that define the rate changes to be made. RateAmountMessages that define the rate changes to be made. This element defines standard attributes that appear on the root element for all OpenTravel Messages.