You don't need to configure country code Access Point!!! Normally its hard-coded in firmware.
Are you using AP with WLC or its a autonomous AP ?
Please paste the sh version output from AP.
Example: AIR-CAP3702I-x-K9, Here X is the country/Region code(Ex: E is for Europe..., A for America)
Don't forget to rate helpful posts
Controllers and access points are designed for use in many countries with varying regulatory requirements. The radios within the access points are assigned to a specific regulatory domain at the factory (such as -E for Europe), but the country code enables you to specify a particular country of operation (such as FR for France or ES for Spain). Configuring a country code ensures that each radio’s broadcast frequency bands, interfaces, channels, and transmit power levels are compliant with country-specific regulations.
If it is an universal access point like below, then do priming