The failure is caused by a "stale file handle" exception. Below is error.
java.io.exception : Stale File Handle.
The issue is caused when external applications try to read the file when file is being written to SFTP location.
Release : 15.6
Component : CLARITY SAAS JOBS
This can be resolved by changing the schedule of external applications to retrieve files after they have been written to SFTP location.
See the following referenced at: https://stackoverflow.com: What does 'stale file handle' in Linux mean?