to change the CC of the whole controller, you need to write erase all and start again from the serial port - the quickstart provisioning will ask you for country code and it cannot be changed once the controller is provisioned.
Or, you can just change it in the ap system profile, this will ensure the APs are using the right regulatory domain.
Having said that, converted IAPs are very picky about regulatory domains - if your IAP is set to UA for example, but the controller is using KZ, I would just erase the config (dont forget to keep output of 'show license' before you do) and start again.
regards
-jeff