The AP has a part number which is not allowing to set up the desired country code. For example:
ap8432# sh version
AP8432 version 184.108.40.206-034R
Copyright (c) 2004-2016 Symbol Technologies, Inc. All rights reserved.
Booted from secondary
ap8432 uptime is 0 days, 00 hours 07 minutes
CPU is ARMv7
Base ethernet MAC address is AA-AA-AA-AA-AA-AA
System serial number is xxxxxxxx
Model number is AP-8432-680B30-US
You will not be able to set up, for example, a FR country code either on the AP override or under rf-domain.