PowerProtect Server Disaster Recovery backups failing with AccessDeniedException

The PowerProtect Data Manager Appliance Server Disaster Recovery (DR) backups are failing with an exception. The /var/log/brs/serverdr/serverdr.log shows:

YYYY-MM-DD HH:MM:SS ERROR [] [createBackupAsync-2] [][][][TRACE_ID:8d1eb37a6d33f4df;JOB_ID:90a8dc6d7559f55d][] [c.e.d.e.c.s.c.u.SdrUtils.createFailedErrorMessage(570)] - Generating failed error message
java.nio.file.AccessDeniedException: /data01/serverdr_staging/postgres_pwd
        at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:90)
        at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
        at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)

..
..
"name" : "Create a Server Disaster Recovery backup - by Scheduler",
  "category" : "DISASTER_RECOVERY",
  "subcategory" : null,
  "ancestryId" : "93ad5efc-b72c-44c5-9638-44093885b358",
  "parentId" : "36b9c1ef-fe95-478c-90a8-dc6d7559f55d",
  "classType" : "TASK",
  "source" : {
    "type" : "DATA_MANAGER",
    "id" : null,
    "description" : null
  },
  "result" : {
    "status" : "FAILED",
    "summaries" : [ "BackUp ID : b75cfb53-4859-4f8c-839e-a4073a91f32b", "Backup Name : SystemDR-1662050537324", "PPDM Backup : PPDM Task Id : 7f23a861-1dc9-4b7a-8c28-84ac81df6956", "Available PPDM Storage : 0.0 B (0 Bytes)", "Backup Size : 47.2
3 MB (47230767 Bytes)", "Tar file size : 79.56 MB (79557831 Bytes)", "FAILED" ],
    "error" : {
      "code" : "ASDR0001",
      "reason" : "/data01/serverdr_staging/postgres_pwd",
      "detailedDescription" : "The Server Disaster Recovery backup cannot be completed.",
      "remediation" : "Please review the log files at /var/log/brs/serverdr for more detailed information or contact support if the issue persists.",

The Incorrect permissions are configured for the /data01/serverdr_staging/postgres_pwd directory. The cause of the incorrect permissions is not known.

admin@my-ppdm:~> ls -l /data01/serverdr_staging/
total 1292
drwxr-xr-x 3 elasticsearch elasticsearch  292 Sep  8 12:57 elasticsearch
drwx------ 3 admin         admin           17 Aug 26 10:42 etc
drwx------ 5 admin         admin          138 Sep  8 12:57 lockbox
drwx------ 5 admin         admin          138 Sep  8 12:57 pgsql
-rw------- 1 root          root            48 Jul 21 14:14 postgres_pwd
drwx------ 2 admin         admin           32 Aug 26 10:42 resiliency

Update the permissions for the /data01/serverdr_staging/postgres_pwd directory.

• Open an SSH session to PowerProtect Data Manager and authenticate with the admin account.
• Use the su command and authenticate with the root password: sudo su
• Update the postgres_pwd directory permissions:chmod 777 postgres_pwd
• Update the postgres_pwd directory owner: chown admin:admin postgres_pwd