What is a Port ? What are the types of Ports ?
A port is a communication channel through which Messages can be sent or received in SAP .
The sender and the receiver both specify the port through which they will communicate.
The common port types are the TRFC Port and the File Port.
If both sender and receiver mention TRFC ports, data is exchanged via RFC connections.
If however , a file port is mentioned , the IDOC is written in a flat file at the specified location at the sender system.Then a FTP transfer should be done from that location to the receiver system or a Middleware that will send the file to the receiver system.
The transaction to maintain ports is WE21.
SM59:
RFC Destination:
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