NetWorker: Server bootstrap backup fails /app/nsr/authc/data/authcdb.mv.db was not successfully saved

NetWorker server is installed on a Linux platform.
The NetWorker installation is under a nondefault path. The default installation path is /nsr. In this article, the path shown is /app/nsr. The path on your server may differ if a nondefault installation path was used.
The NetWorker Server Protection policy fails. The bootstrap save set log reports:

4746:save: external ASM `nsrauthcasm' exited with code 1
32098:save: /app/nsr/authc/data/authcdb.mv.db was not successfully saved
174918:save: Step (6 of 6) for PID-59607: Unable to complete the backup. See the savegrp log to track the closure steps of the backup.
Can't encode arguments90019:save: save of 'bootstrap' to server 'xxxxxxx.net' failed.
142169:save: Save-set ID '1782643497' (client 'xxxxxxx.net': save-set 'bootstrap') is aborted.
86711:save: Aborted save-set ID '1782643497' (client 'xxxxxx.net': save-set 'bootstrap') may not have been removed properly.

Action log:

2025/12/16 15:24:49 Unable to set the work item 'xxxxxx.net' status to FAILED with error: Work item xxxxxx.net not found in running list. .
2025/12/16 15:24:49 Action server backup 'Server db backup' with job id 3041496 is exiting with status 'failed', exit code 1

The following permission issue was found for the file: authcdb.mv.db in the path: /app/nsr/authc/data

[root@xxxxxxx:~]# ls -ltrh /app/nsr/authc/data/
total 64K
-rw------- 1 nsrtomcat nsrtomcat 172 Dec 14 15:14 authcdb.lock.db
-rw------- 1 nsrtomcat nsrtomcat 60K Dec 16 12:42 authcdb.mv.db
[root@xxxxxxx:~]#

1. Connect to NetWorker Server over SSH, log in as user.
2. Switch to root: sudo su -
3. Stop NetWorker services: systemctl stop networker
4. Go to the AUTHC data folder, for example: cd /app/nsr/authc/data
5. Change permission of authcdb.mv.db to 644: chmod 644 authcdb.mv.db
6. Validate permission by running: ls -ltrh /app/nsr/authc/data/

   [root@xxxxxxxxx:~]# ls -ltrh /app/nsr/authc/data/
   total 64K
   -rw------- 1 nsrtomcat nsrtomcat 172 Dec 14 15:14 authcdb.lock.db
   -rw-r--r-- 1 nsrtomcat nsrtomcat 60K Dec 16 12:42 authcdb.mv.db
   [root@xxxxxxxxxx:~]#

7. Start networker services: systemctl start networker
8. Perform a NetWorker Server Protection Server backup.