![]() This protocol is most commonly used today in the form of Procurement PunchOut, which specifically supports interactions between a procurement application and a supplier's eCommerce web site and possibly includes an intermediary for authentication and version matching. PunchOut is a protocol for interactive sessions managed across the Internet, a communication from one application to another, achieved through a dialog of real-time, synchronous cXML messages, which support user interaction at a remote site. The current protocol includes documents for setup (company details and transaction profiles), catalogue content, application integration (including the widely used PunchOut feature), original, change and delete purchase orders and responses to all of these requests, order confirmation and ship notice documents (cXML analogues of EDI 855 and 856 transactions) and new invoice documents. This expansion is the limit of point-to-point configurations necessary for communication. However, it can be expanded through the use of extrinsic elements and newly defined domains for various identifiers. ![]() ![]() The protocol does not include the full breadth of interactions some parties may wish to communicate. cXML is based on XML and provides formal XML schemas for standard business transactions, allowing programs to modify and validate documents without prior knowledge of their form. CXML (commerce eXtensible Markup Language) is a protocol, created by Ariba in 1999, intended for communication of business documents between procurement applications, e-commerce hubs and suppliers.
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