Looking for policy tracking tools

RHEL 6x Netbackup Ent v7.1.0.4

I have been trying to understand and use bppllist to track my Netbackup policies and have not been able to get what I'm looking for.  I use OpsCenter to report and if a policy changes but that's all the information I get from there.  I want a script that will track:

When a policy is created, deleted or changed

What was changed

Who made the change

I was told my predecessor had such a script but have not been able to find it or create something successful on my own and have not found the right information on the Internet.  Can any of you help me please?