Call a function module in an on-premise ABAP system via RFC, using a sample Web application. This scenario performs a remote function call to invoke an ABAP function module, by using the Connectivity ...
SAP JCo needs to know the meta data of the function module it mimics. This includes e.g. parameters, typing etc. Hence, JCo by default checks the data dictionary (DDIC) of an SAP NetWeaver ABAP.