In similar fashion, create an external system for LDAP, name it appropriately, and configure it appropriately for your operating environment.
Also create external systems for BatchFTP, BatchLocalFile, File, and HTTP (as well as any other external systems corresponding to other transport protocols used by your B2B Host), and configure them appropriately for your operating environment.
Once you finish these steps, the environment now has all you need to build a B2B Host as well as the GUI, Tracker, and error-handling projects.
To create the eXchange Service, you create a connectivity map that links the B2B Host to an Oracle eWay and then build the corresponding Deployment Profile. See Connecting the B2B Host to Oracle and LDAP Externals.