NDMP Bakcup of FS7600 Failing

Hello there!

We're trying to back up data on a container through our FS7600 and though it appears all the permissions are set correctly, the NetBackup job continues to fail.

Here are some sample errors:

3/22/2017 7:07:38 PM - started process bpbrm (8608)
3/22/2017 7:07:38 PM - connecting
3/22/2017 7:07:38 PM - connected; connect time: 00:00:00
3/22/2017 7:07:39 PM - mounting CD0042
3/22/2017 7:08:32 PM - Info bptm(pid=8732) media id CD0042 mounted on drive index 0, drivepath {3,0,0,0}, drivename IBM.ULTRIUM-TD6.000, copy 1
3/22/2017 7:08:32 PM - mounted; mount time: 00:00:53
3/22/2017 7:08:32 PM - positioning CD0042 to file 1
3/22/2017 7:08:42 PM - positioned CD0042; position time: 00:00:10
3/22/2017 7:08:42 PM - begin writing
3/22/2017 9:08:54 PM - Error bptm(pid=8732) media manager exiting because bpbrm is no longer active
3/22/2017 10:08:55 PM - Info bptm(pid=8732) EXITING with status 174 <----------
3/22/2017 10:08:55 PM - end writing; write time: 03:00:13
media manager - system error occurred(174)

and...

3/15/2017 3:54:53 PM - mounted; mount time: 00:00:53
3/15/2017 3:54:53 PM - positioning CD0038 to file 1
3/15/2017 3:54:57 PM - positioned CD0038; position time: 00:00:04
3/15/2017 3:54:57 PM - begin writing
3/15/2017 5:55:10 PM - Error bptm(pid=5160) media manager exiting because bpbrm is no longer active
3/15/2017 6:55:11 PM - Info bptm(pid=5160) EXITING with status 174 <----------
3/15/2017 6:55:11 PM - end writing; write time: 03:00:14
media manager - system error occurred(174)
3/16/2017 5:10:52 AM - Error ndmpagent(pid=6796) : ERROR: Invalid backup root directory[ /ETC_STUFF_ITS/Software]
3/16/2017 5:10:52 AM - Error ndmpagent(pid=6796) ndmp_data_start_backup failed, status = 9 (NDMP_ILLEGAL_ARGS_ERR)
3/16/2017 5:10:52 AM - Error ndmpagent(pid=6796) NDMP backup failed, path = /ETC_STUFF_ITS/Software

Does anyone have any insight or a link to a NDMP NetBackup configuration guide?

Thanks in advanced!