WSDL 1.1 <message>
•Message is a collection of parts
–The message is not a real thing by itself, but just a bag of things
–Each part represents one “thing” to be sent or received
•Don’t just think of RPC parameters – a medical record being sent to a doctor may consist of some XML document (contained in the SOAP envelope) and lots of other stuff like XRay images etc. as attachments. Each such thing would be modeled as a part.
•In other scenarios it may be multiple XML documents or elements from different namespaces (purchase order + vcard)
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