ERROR: Some cache files with name prefix <name prefix> for Lookup <Lookup transformation name> are missing or invalid.
You ran a session with multiple partitions that uses a named persistent lookup cache, but the Integration Service cannot access some of the cache files.
Verify the Integration Service can access all cache files for each partition. Or, remove all existing persistent named cache files and run the session again. If all named persistent cache files do not exist, the Integration Service rebuilds the persistent cache files.