Cost of Resource Exchange (CORE) Protocol

While the NISO CORE Working Group recommends SOAP be used as the Web Services transport mechanism, the specifics of the SOAP configuration are beyond the scope of the CORE recommended practice and are left to trading partners to devise. [...] NOTE: In the CORE protocol, the resource is what is being paid for in the transaction and is referred to as the product. [...] The basic element of the protocol is the COREDocument; all elements within the schema are children of the COREDocument element. [...] The invalid- period error would generally indicate a problem with the syntax of the dates, i.e., the correct date format was not used, or when the begin and end dates conflict, e.g., the end date is before the begin date. [...] If a Request within a COREDocument bearing an unknown version number is received, the responder constructs a Response COREDocument bearing the value of the constructor’s own version number, adds a RequestProblem element containing the error unknown-version, and returns the constructed document to the submitter of the Request.