Does anyone know what to look at when the BARS backup looks to have backed up successfully but the end error is "Could not build archive successfully"

Part of the BARS ouput -

[02:14:19 AM] Staging complete. Size of staging directory is 3131MB.

[02:14:19 AM] Building archive \\10.52.7.53\iptbackup$\Backup02-14-08#2-14.tar.

[02:14:20 AM]

[02:14:23 AM] [Error] Could not build archive successfully.

I have thought about -

Checking destination for disk space and permissions

And to try running the backup to a different destination and see if I get the same issues

Currently waiting on end user

But if anyone has any other suggestions, most welcomed.