I don’t think there’s a way to reset UC/UN once it is set short of manually updating the database. I just created a ticket to track this, see

say if I had UC or UN set for some SNMP interfaces, later on I changed my mind and decided to use policy instead to manage collection. How do I get out of UC/UN and get to PC/PN? If I understand correctly, nothing overrides UC/UN? Is there a way to reset UC/UN back to C/N besides updating the snmpcollect field manually in the database?

PR: https://github.com/OpenNMS/opennms/pull/5165

We will move ahead with the 'PN' / 'PC' suggestion from .

In that case, the policy would only apply once and then wouldn't be able to change it back if another policy was later introduced to change it back to collect.  

What about a 'PN'/'PC' for policy-set values?

If the value is UC/UN, the policy won't apply.
If the value is PC/PN, policies can update the field, but provisiond's logic can't update the filed.
If the value is C/N, provisiond can apply it's logic to determine collection, and policies can update it to PC/PN when applicable.