root element representating a soap message Soap header element..contains routing information, tracing information, acknowledgement etc Soap header element..contains routing information, tracing information, acknowledgement etc Soap body element ..contains information about payload data, purpose of the message and reliable delivery mechanisms Optional element that points to any data present either in the Payload Container or elsewhere, e.g. on the web identifies data associated with the message either as the payload or remote resources accessible via a URL This element identifies the schema or a DTD that identifies the item referenced in parent Reference element. It provides a means of identifying the schema location and its version A required element that contains routing information for the message (To/From) as well as other context information about the message identifies the parameters governing the exchange of messages between the parties eg.. transport method, credentials etc.. Required element is a string identifying the set of related messages that make up a conversation between two parties identifies the service that acts on the message and it is specified by the designer of the service eg.. urn:services:SupplierOrderProcessing identifies a process within a service that processes the message eg.. NewOrder Required element that provides a means of uniquely identifying a message Required element that is a unique identifier for the message Indicates the time by which a message should be delivered to and processed by the To Party Identifies the quality of service with which the message is delivered. Attributes define the requirements Optional element containing entires that identify the Message Service Handlers that sent and should receive the message Contains information about a single transmission of a message between two instances of a MSH identifies the immediate sender of the message identifies the immediate receiver of the message Indicates the sequence in which messages must be processed by a receiving MSH. The sequence number is unique within the ConverstationID and a MSH. It is set to zero on the first message and then incremented by one for each subsequent message sent. Optional element to inform the ultimate FROM Party that the message was received by the TO party Optional element used by a receiving MSH to acknowledge to the sending MSH that a previous message has been received Optional element that contains a list of the erros that are being reported against a previous message Contains an error message Optional element to respond to a request on the status of a message delivered previously Optional element to identify a message whose status is being requested Optional element used to convey information to the next MSH Contains the URL of the Sender's/Receiver's message service handler. Unless another URL is identified within the CPA or in MessageHeader the recepient of the message uses this URL to send or respond to a message Contailns logical identifiers such as DUNS number, physical location, email address etc. If multiple PartyIds are specified, all memebers of the list identify the same organisation..useful when multiple intermediaries are involved. Required element identifies the end party that is the recepient of the message identifies the party that originated the message Provides a human readable description of the payload object being identified by the parent Reference element. Contains the MessageId value of an earlier ebXML Message to which this message relates to in cases of error messages, acknowledgement messages, delivery receipts, and for status request or response messages. In such situations, it is a required element Required timestamp indicates a value representing the time that the message header was created