SNMP connected station list not working on one AP

I'm using Powercode to automatically set parent/child relationships from my epmp1000 APs to their SM.  For some reason I've encountered an AP where the OID isn't available.  Many other OIDs are working but this one in particular is saying "No data available".

I am walking: .1.3.6.1.4.1.17713.21.1.2.11.1.1

It was running 3.2 but I've updated it to 3.5.6 with no change in this issue.  It is TDD with GPS sync, has a couple customer connected to it.

Any ideas to try?

I get nothing on that OID as well, however I do get the SMs on the following OID:

.1.3.6.1.4.1.17713.21.1.2.30.1.1
.iso.org.dod.internet.private.enterprises.cambium.pmpMibTree.cambiumPmp80211SystemStatus.cambiumRFStatus.cambiumAPConnectedSTATable.cambiumAPConnectedSTAEntry.connectedSTAMAC


@jluthman wrote:

..

I am walking: .1.3.6.1.4.1.17713.21.1.2.11.1.1



In latest MIB file it is marked as  "obsolete". It was replaced by  .1.3.6.1.4.1.17713.21.1.2.30.1.1