RFC is the remote communications protocol used by SAP NetWeaver. It is based on Remote Procedure Call (RPC). PowerCenter makes remote function calls to communicate with SAP NetWeaver.
To execute remote calls from PowerCenter, SAP NetWeaver requires connection information, and the service name and gateway on the application server. This information is stored in a configuration file named
sapnwrfc.ini
on the node hosting the PowerCenter Client and the node where the PowerCenter Integration Service and SAP BW Service processes run.