Veritas Netbackup error

You could try to reinstall the remote agent if these errors occure on a single client, which looks like that is the case.
One of your status codes is 50. Below is a series of things to try to troubleshoot this problem:
1 Enable detailed debug logging:
  Create a bpbkar debug log directory (UNIX or Windows only).
             On UNIX: enable debug logging to the system logs by including the verbose option (-v) on the
             command that you use to start a daemon. This command can be:
               The ltidcommand that started the device management processes. If the -v option is included
                 on the ltid command, all daemons that were started as a result also have the -v option in
                 effect.
               A command to start a specific daemon (for example, acsd -v).

  Create a bpcddebug log directory (this log is created automatically on Macintosh clients.)
  On UNIX clients, add the VERBOSEoption to the /usr/openv/netbackup/bp.conffile.
  On PC clients, increase the debug or log level as explained in the debug log topics in Chapter 3.

2 Retry the operation and examine the resulting logs.
3 This error may occur if nbjm terminated while a backup job was running. Examine the unified logging files on the NetBackup server for nbjm (117) for more detail on the error. All unified logging is written to /usr/openv/logs(UNIX) or install_path\NetBackup\logs (Windows).
4 On UNIX clients, check for core files in the / directory.
5 On UNIX clients, check the system log (/usr/adm/messages on Solaris) for system problems.
6 This problem can sometimes be due to a corrupt binary. On UNIX clients, use the UNIX sum command to check the bpcd, bpbkar, and tar binaries, which are located in /usr/openv/netbackup/binon the client. Reinstall them if they are not the same as in the client directory under /usr/openv/netbackup/clienton the server. Run the NetBackup Configuration Validation Utility (NCVU) for the associated NetBackup clients. Note the client software checks in section
two.On a Windows client, check the bpinetd.exe, bpcd.exe, bpbkar32.exe, and tar32.exe files, which are located in the install_path\NetBackup\bin folder on the client. Reinstall the client if these files are as follows:
  Not the same size as on other Windows clients
  Not at the same release level
  Do not have the same NetBackup patches as other Windows clients