On the concurrent manager server, test the sftp connection to the site and verify it works with the details entered on the delivery options.
This has to be done as the owner of the applications (applmgr or applprod, or whatever it is). This loads the site's rsa key interactively which does not happen with the non-interactive OPP delivery.
Thank you for your reply.
Customer can manually connect the SFTP server on concurrent manager server successfully with sftp command.
Customer can get/put the file from/to SFTP server.
What version of EBS are you on? Are you current on XDO/BI Publisher patching?
BI Publisher Delivery Manager: How to Implement Support For FTP/SFTP Download (Doc ID 1609258.1)
Overview of Available Patches for Oracle XML Publisher embedded in the Oracle E-Business Suite (Doc ID 1138602.1)