12. The method of claim 8 , wherein the message from the other application is a status message.
8. A method for processing messages using an extended schematized XML protocol, comprising: receiving, at a server application on a server processor, a message from another application, the message specifying first data supported by a first version of the XML protocol schema, and comprising an annotation specifying second data supported by a second version of the XML protocol schema, wherein the server application deploys a third version of the XML protocol schema that supports third data; parsing the message, by the server application on the server processor, using the first version of the XML protocol schema to identify first message data; parsing the message annotation, by the server application on the server processor, to identify the second data; and identifying a portion of the second data that is the same as a portion of the third data.