This issue is very unusual. I am using a SFTP sender communication channel which is able to see the SFTP server and the folder in there but unable to poll the file from inside it. It is not throwing any error but showing message as if there is no file in the server.
However I am able to login to the unix server of SAP PO and use sftp command and get the file from the SFTP server.
It is just the sender communication channel which is not able to locate the file and poll it from the server.
When I am changing the communication channel to receiver it is able to put files in the same folder without any issue.
Please note that all the permission for the PO user are given in the SFTP folder, as I am able to get the file from PO unix server.
The only unusual thing in it is that it is using port 25.
Can someone please help me if any one has faced this issue recently.
Attached are the screen shots of the comm channel and the unix box