AP- C9120AXI-E is unable to join controller.

[NITINPATIL3060]

Below is the message from access point.  what is this unsupported vendor error. 

Date is correct time is two hours lagging.  AP policy is MIC is enabled. 

[*06/17/2020 10:05:53.3080] Discovery Response from 139.145.88.4

[*06/17/2020 10:05:53.3080] Unsupported vendor spec payload TLV_VENDOR_SPECIFIC_PAYLOAD(215) for msgtype 2

[d.friday]

can you provide some more info like the controller you are using and software version ?

[NITINPATIL3060]

AIR-CT3504-K9 Software 8.10.121.0

[marce1000]

 - Check AP versus controller compatibility info's and requirements :

           https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html

 M.

[jamie.brown@its-networks.com]

I had a similar issue yesterday trying to join c9115AXI access points to a 5520 WLC on 8.10.130.0 software. I was able to resolve it by checking the box at Security>>AAA>>AP Policies>>Accept Local Significant Certificate (LSC).