Working with Connections
When you associate an adapter service with a connection pool referring to a client or server connection, the adapter service can use the client or server connection to communicate with the SAP system.
Each time you create an adapter configuration, a client connection and a server connection are added automatically and used as the default connections. The client connection is stored in the ClientConnections folder, and the server connection is stored in the ServerConnections folder. If you do not want to use the default connections, you can add a new connection and add a new connection pool.
Inbound adapter configurations use client connections to communicate with the SAP system, while outbound adapter configurations use server connections to communicate to with SAP system.
For the adapter configurations that have both inbound and outbound adapter services, the choice between client or the server connections depends on the adapter service.
After you have added adapter services for an adapter configuration, all inbound adapter services reference the default client connection pool, and all outbound adapter services reference the default server connection pool.