Cisco Prime 3.10 AP's not adding even though WLC is added.

[Mogwai]

I've got the WLC added via SNMP without any issues, but for some reason, the AP's are not populating.  The AP's are a mix of 9176, 2802, & 3802's.  The VLAN has been discovered in Prime, Not sure what is missing or what might be causing the AP's to not populate?

[Mark Elsen]

  - @Mogwai   I am convinced that for instance the 9176 model(s) are no longer supported in Prime , prime being too old
                       and EOL

  M.

[Mogwai]

Sorry, mistook the model. They are actually 9130, 2802, & 3802's which are all supported. 

[Mark Elsen]

   - @Mogwai    Make sure that you are on the last patch release for Prime 3.10   (Patch 6)
                         If it does not help  : remove the controller from prime ; re-enter it again with admin and
                         snmp credentials  ; and press 'Verify Credentials'   first

  M.

[Mogwai · Accepted solution]

Found the issue, had to enable SNMPv3. 

https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/214286-managing-catalyst-9800-wireless-controll.html