What version are you running ? MR 29.4.1
What firmware version are you running ?
What AP models ? MR 44
SSID Configurations ? 802.1X with radius
802.11r enabled ?
Any logs from Wireless health ?
Client xxxxxxx had a failed connection to SSID XXXX during authentication because the auth server rejected the auth request.
802.11 REASON (CODE 23)
802.1X RADIUS failed