This web service provides an interface which allows trading partners to interact with BargeEx. This method can be used to verify a BargeEx web services method can be successfully called. It will take an input string, reverse it, and return it back to the caller. This method returns current data mapping information for the indicated trading partner and data map type. All Master values will be returned, even if they do not have a Custom value defined. An optional Master value or Custom value can be specified to limit the results. This method either modifies the Custom value that maps to a particular Master value record or creates a temporary custom data mapping. This method sends a document to a trading partner. This method retrieves the oldest document that is ready for pickup or returns NoMoreDocuments if no documents are ready for pickup. This method is used to indicate the document returned by the GetNextDocument method has been successfully retrieved by the trading partner. If it is not called, the GetNextDocument method will return the same document every time it is called. This web service provides an interface which allows trading partners to interact with BargeEx.