# XML Usage Specification

**Availability change response XML usage**

| <p><strong>Element/@Attribute</strong></p><p> </p><p><strong>Parent XPath</strong></p> | <p> </p><p><strong>Description</strong></p>                                                                                                                                                                | <p> </p><p> </p><p><strong>Occurrences</strong></p> |
| -------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------- |
| <p>@TimeStamp</p><p> </p><p><strong>/OTA_HotelAvailNotifRS</strong></p>                | <p> </p><p>Time of the transaction in xml schema date-time format</p>                                                                                                                                      | 1                                                   |
| <p>@EchoToken</p><p>  </p><p><strong>/OTA_HotelAvailNotifRS</strong></p>               | Unique Identifier to track the RQ/RS message                                                                                                                                                               | 1                                                   |
| <p>@Target</p><p><strong>/OTA_HotelAvailNotifRS</strong></p>                           | <p> </p><p>Always set to “Production”</p>                                                                                                                                                                  | 1                                                   |
| <p>@Version </p><p><strong>/OTA_HotelAvailNotifRS</strong></p>                         | <p> </p><p>Always set to “1.0”</p>                                                                                                                                                                         | 1                                                   |
| <p><br></p><p>Success</p><p> </p><p><strong>/OTA_HotelAvailNotifRS</strong></p>        | <p>If included this element will indicate that the request message was successfully processed.</p><p> </p><p> </p><p>Either a Successelementor Errors/error element(s) are required in every response.</p> | 0..1                                                |
| <p>Errors</p><p><strong>/OTA_HotelAvailNotifRS</strong></p>                            | Either a Successelementor Errors/error element(s) are required in every response.                                                                                                                          | 0..1                                                |
| <p>Error </p><p><strong>/OTA_HotelAvailNotifRS/Errors</strong></p>                     | <p>Description of cause for a fatal problem during request message processing.</p><p>*If an Errors element is included one or more Error elements are required</p>                                         | 1                                                   |
| <p> @Type</p><p><strong>/OTA_HotelAvailNotifRS/Errors/Error</strong></p>               | This is an enumeration of HTNG approved error types (OTA code list EWT). See appendix for supported values.                                                                                                | 1                                                   |
| <p> @Code</p><p><strong>/OTA_HotelAvailNotifRS/Errors/Error</strong></p>               | <p>This is an enumeration of</p><p>HTNG approved error codes (OTA code list ERR). See appendix for supported values.</p>                                                                                   | 1                                                   |
