3. CPP/CPA with ebXML Registry Part A Regi CPAY Pary B Figure 9-3 Overview of working architecture of CPP/C PAwith ebXML registry (1) Any Party may register its CPPs to an ebXML Registry (2) Party B discovers trading partner ching in the Registry and downloads CPP(A)to Party B server. (3) Party B creates CPA(A, B)and sends CPA(A, B)to Party a (4) Parties A and B negotiate and store identical copies of the completed CPA as a document in both servers. This process is done manually or automatically (5) Parties A and B configure their run-time systems with the information in the CPa (6 Parties a and b do business under the new CPA 9.2.3 ebXML Message Structure and Packaging Figure 9-4 below illustrates the logical structure of an ebXML Message Transport Envelope(smtp, Http, etc. ) bXML Message Envelope(MIME multipart/related) ebXML Header Envelope ebXML ebXML Header Document Header Manifest leader bXML Payload Envelope Payload Container Figure 9-4 ebXML Message Structure An ebXML Message consists of an optional transport Protocol specific outer Communication Protocol Envelope and a Protocol independent ebXML Message Envelope. The ebXML3. CPP/CPA with ebXML Registry Figure 9-3 Overview of working architecture of CPP/CPAwith ebXML registry （1） Any Party may register its CPPs to an ebXML Registry. （2） Party B discovers trading partner A(Seller) by searching in the Registry and downloads CPP(A) to Party B server. （3） Party B creates CPA(A,B) and sends CPA(A,B) to Party A. （4） Parties A and B negotiate and store identical copies of the completed CPA as a document in both servers.This process is done manually or automatically. （5） Parties A and B configure their run-time systems with the information in the CPA. （6） Parties A and B do business under the new CPA. 9.2.3 ebXML Message Structure and Packaging Figure 9-4 below illustrates the logical structure of an ebXML Message. Transport Envelope (SMTP, HTTP, etc.) ebXML Message Envelope (MIME multipart/related) ebXML Header Envelope ebXML Header Document ebXML Payload Envelope ebXML Payload Document(s) Payload Container Manifest Header ebXML Header Container Figure 9-4 ebXML Message Structure An ebXML Message consists of an optional transport Protocol specific outer Communication Protocol Envelope and a Protocol independent ebXML Message Envelope. The ebXML