This can be due to the CPIS interface being enabled in multiple Mosaic environments.
Once the non-live instance which is sending files to the SFTP server has been identified and the interface disabled we can support you to identify any files that need to resent to Mosaic. Please raise a case and reference the title of this article.
Error: 'SFTP error moving file from /fromCpis/<filename> to /archiveAck//<filename>'
In this article, we explain the SFTP error seen in Mosaic logs when moving files between CP-IS directories.
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Written by Yusef Abulaynain