Backup Successfull but could not completely protect remote computers

Hi,

I have a question about the mail notification I receive for 1 of my backups:

(Server: "BACKUPEXEC") (Job: "XXX") The job completed successfully.  However, the following conditions were encountered:

Could not completely protect remote computers because  the Backup Exec Remote Agent was not  installed.

Does it means that the backup does not work completely if I need to do a restore?

This backup is only a backup of a shared folder on a Windows 2012 server, it is obligatory to install the remote agent on this server?

Because actually we can't install remote agent on a 2012 I think.

Thanks,

Regards