# XML Usage specification

| <p><strong>Element/@Attribute</strong></p><p><strong>Parent XPath</strong></p>                            | **Description**                                                              |
| --------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- |
| <p>@TimeStamp</p><p><strong>/OTA\_ReadRQ</strong></p>                                                     | Time of the transaction in xml schema date-time format                       |
| @Version **/OTA\_ReadRQ**                                                                                 | The OTA schema version. Mandatory. Use “3.500”.                              |
| @Target **/OTA\_ReadRQ**                                                                                  | Set to “Production”.                                                         |
| <p>POS</p><p><strong>/OTA\_ReadRQ</strong></p><p><strong>/OTA\_ReadRQ /POS</strong></p>                   | Element for indicating the source system.                                    |
| <p>RequestorID</p><p><strong>/OTA\_ReadRQ /POS/Source</strong></p>                                        | <p><br></p>                                                                  |
| <p>@Type</p><p><strong>/OTA\_ReadRQ /POS/Source/RequestorID</strong></p>                                  | Type of the ID. Set to “22”. ERSP (Electronic reservation service provider). |
| <p>@ID</p><p><strong>/OTA\_ReadRQ /POS/Source/RequestorID</strong></p>                                    | The id for the PMS.                                                          |
| <p>BookingChannel</p><p><strong>/OTA\_ReadRQ /POS/Source</strong></p>                                     | Requestor Name information                                                   |
| <p>@Type</p><p><strong>/OTA\_ReadRQ /POS/Source/BookingChannel</strong></p>                               | The type of the requestor system. “4” for PMS, “5” for CRS.                  |
| <p>@Primary</p><p><strong>/OTA\_ReadRQ /POS/Source/BookingChannel</strong></p>                            | Set to “true”.                                                               |
| <p>CompanyName</p><p><strong>/OTA\_ReadRQ /POS/Source/BookingChannel</strong></p>                         | Name of the requestor System.                                                |
| <p>@Code</p><p><strong>/OTA\_ReadRQ /POS/Source/BookingChannel</strong></p>                               | The code of the PMS, assigned by RateGain.                                   |
| <p>ReadRequests</p><p><strong>/OTA\_ReadRQ</strong> </p>                                                  | Container for the read request                                               |
| <p>HotelReadRequest</p><p><strong>/OTA\_ReadRQ/ReadRequests</strong></p>                                  | The read request                                                             |
| <p>@HotelCode</p><p><strong>/OTA\_ReadRQ/ReadRequests/HotelReadRequest</strong></p>                       | The hotel code of the hotel for which the reservation is to be downloaded.   |
| <p>SelectionCriteria</p><p><strong>/OTA\_ReadRQ/ReadRequests/ HotelReadRequest</strong></p>               | Contains the selection criteria to filter reservations to be retrieved.      |
| <p>@SelectionType</p><p><strong>/OTA\_ReadRQ/ReadRequests/HotelReadRequest/SelectionCriteria</strong></p> | Set to “Undelivered” to request all previously undelivered reservations.     |


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