Types and element definitions used as the base constructs for all message payloads. Create all message root elements as member of the substitution group with the element as the head. Global message types must be defined as an extension of the STL_Payload type. All message roots should be created as an extension of this base type. Global message elements must declare they are a member of the STL_Payload substitution group. This type may be used when an empty payload is needed for error handling. Version of the payload message. Global message element for service requests. Base type for request messages. Global message element for service responses. Base type for response messages. Global message element for service notifications. Base type for notification messages. Results is an abstract type to be used as a substitution group head. ApplicationResults is an example of its intended usage. ApplicationResults can be used anywhere where Results is referenced, specifically as the contents of a Sabre SOAP Fault/detail element. An indication of the source of error when processing the request. Host system command run to create this result. Application specific code and Message. A textual description to provide more information about the specific condition, warning or error with code attribute as numeric value. An abbreviated version of the error in textual format. If present, this attribute may identify an unknown or misspelled tag that caused an error in processing. It is recommended that the Tag attribute use XPath notation to identify the location of a tag in the event that more than one tag of the same name is present in the document. Alternatively, the tag name alone can be used to identify missing data [Type=ReqFieldMissing]. If present, this attribute allows for batch processing and the identification of the record that failed amongst a group of records. This value may contain a concatenation of a unique failed transaction ID with specific record(s) associated with that transaction. If present, this attribute refers to an online description of the error that occurred. If present, this attribute provides an XML IDREF to the elemenet for which the results apply.