Hi @Lionel S., This is an issue that is currently being investigated, but we do not yet have an ETA for a resolution. If you open a case with support, we can keep you up to date as this progresses towards resolution. We are glad you have found a wor...
Based on the error message given by Prashan, there is a RADIUS Server Group object that is still using the servers you are trying to delete. You would want to go into a RADIUS SSID(or create one) then use the Select icon next to RADIUS Server Groups....
