You can use bpplinclude (/usr/openv/netbackup/bin/admincmd/, assuming unix):
USAGE: bpplinclude policy_name [-v] [-M master_server,...] -L|-l
bpplinclude policy_name [-v] [-M master_server,...] [-generation generation] [-reason "<reason>"]
{-add path_name ...} |
(-add -f filename} |
(-delete path_name ...} |
{-delete -f filename} |
{-modify {old_path_name new_path_name} ...}
Note: paths with wildcards must be quoted.
The 1st synopsis will give you the current list - the 2nd will let you add paths. It should be pretty easy to get a list of current vols, compare it to the list of existing includes, and add anything missing.
Bill