How to empty the storage unit from the schedule through command line

HI,

I have some issues with my GUI. Need to remove the storage unit which will be in Schedule tab in the policy. I tried checking in the path /usr/openv/netbackup/bin/admincmd/ bpschedulerep Policy_name -residence NA .

Importantly: i am not trying to change the storage unit in Schedule tab. Want to make it empty.

Any suggestions please.