All Schema files in the OTA specification are made available according to the terms defined by the OTA License Agreement at http://www.opentravel.org/ota_downloads_form.cfm The book response message contains booking information for a given sailing with a specific mode of transportation/gateway city pair and currency and for a selected fare/category pair. This message contains similar information to a standard airline CRS or GDS sailing availability response message. Standard way to indicate successful processing of an OTA message. Returning an empty element of this type indicates success. Standard way to indicate successful processing of an OTA message, but one in which warnings are generated. Specifies the reservation control information or the guest's booking ID in modification mode (e.g. PNR Record Locator and/or Vendor Confirmation Number). Specifies the selected category to book.Contains information related to the selected sailing. Typically the selected sailing is one of the sailings returned in the previous sailing availability response. May be used to provide policy information regarding the booking. Specifies pricing and payment information about the booking. A collection of errors that occurred during the processing of a message.