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 standatd OTA_ErrorRS message is designed to accommodate errors that result from the parser, or from validation, before reaching the server. The set of errors that can use this error is constrained by its limited structure, to provide structural stability. An indication of the processing that was completed on the request message. An error response may be returned and no action taken on behalf of the request message, or there may be some action taken, or the full action may have been completed. The error occurred prior to processing of the request (or if during the processing of the request, before the intentions of the request were completed). The error occurred during processing of the request. The request was partially completed. The error occurred after successful processing of the request. The requested process was completed. The status of the request is unknown. The ErrorCode attribute MUST be present and is defined as free-text with a list of recommended enumerated values, to indicate the error type. This value is used to indicate that the request version is not supported This value is used to indicate that the session has expired This value is used to indicate that the session is already closed This value is used to indicate that a parameter in the request is not supported. indicates an unknown error. Additional information may be provided within the textual part of the element : indicates that the XML message was not well-formed. Additional information may be provided within the ErrorMessage attribute. : indicates that a well-formed XML message was sent, but did not pass the validation check. Additional information may be provided within the ErrorMessage attribute. Indicates an unrecognized payload root element was received. Additional information may be provided within the ErrorMessage attribute. Indicates that the version attribute in the Schema element of the Manifest of the header is not recognized. Additional information, such as version number(s) supported, may be provided within the ErrorMessage attribute. This is intended to be used when the above enumeration list does not meet your needs. An optional indicator to reflect the severity of this condition. A textual description to provide more information about the specific error. This is intended to be used when the above enumeration list does not meet your needs. If present, this attribute refers to an online description of the error that occurred. Identifies the alternate language for a customer or message. The human language is identified by ISO 639 codes. The OTA_PayloadStdAttributes defines the standard attributes that appear on the root element for all OTA payloads. A reference for additional message identification, assigned by the requesting host system. When a request message includes an echo token the corresponding response message MUST include an echo token with an identical value. Indicates the creation date and time of the message in UTC using the following format specified by ISO 8601; YYYY-MM-DDThh:mm:ssZ with time values using the 24 hour clock (e.g. 20 November 2003, 1:59:38 pm UTC becomes 2003-11-20T13:59:38Z). Used to indicate whether the request is for the Test or Production system. For all OTA versioned messages, the version of the message is indicated by a decimal value. A unique identifier to relate all messages within a transaction (e.g. this would be sent in all request and response messages that are part of an on-going transaction). Used to identify the sequence number of the transaction as assigned by the sending system; allows for an application to process messages in a certain order or to request a resynchronization of messages in the event that a system has been off-line and needs to retrieve messages that were missed. This indicates where this message falls within a sequence of messages. This is the first message within a transaction. This is the last message within a transaction. This indicates that all messages within the current transaction must be ignored. This is any message that is not the first or last message within a transaction. Identifes the primary language preference for the message. Identifes the primary language preference for the message. The human language is identified by ISO 639 codes. Used for Character Strings, length 1 to 32 Used for Character Strings, length 1 to 64