This finding was worth noting as there is not much information online regarding this setting. If you need to configure AAA override on an Extreme Wing Wireless Controller, it must be done from CLI. In my example, I set up MAC Auth for the SSID, which was pretty straightforward, but the VLAN tag in the RADIUS response was being ignored. So that it would be acknowledged, it was necessary to access CLI via SSH and navigate to the WLAN settings and enter the following commands:

radius vlan-assignment
commit

There is also another command in the radius directory to enable COA. I don’t remember the specific command, but if you are in the wlan, you can type:

radius ?

Then, look at the command descriptions and select the one for COA enablement. Don’t forget to commit.