When a Full Server Backup (FSB) backup_import is performed on a TIBCO Data Virtualization server with -verbose and -overwrite flags enabled, we see the below message show up as part of the output on the console:
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User does not have sufficient privileges to delete resource '/services/databases/users'.
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Example for reference: C:\Program Files\TIBCO\TDV Server 8.6_9460\bin>
backup_import.bat -overwrite -server localhost -port 9460 -user admin -password password -encrypt -encryptionPassword 123456 -pkgfile FSB_9460.car
-verbose