Simple file to file interface

Hi Experts,

I am doing one File to File interface. My scenario is a simple pass through (No Mapping), where I have to pick a .csv file from FTP server and need to place the same file into SAP directories (AL11).

So please guide me which protocol I need to use (FTP/NFS) in receiver File channel to place the .csv files into SAP.

Thanks in advance.!

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With Warm Regards

Raj