How can i change regulatory domain C to A of access point

Question

Recently my office got an access point - (AIR-CAP2602E-C-K9)  which is not synchronizing with controller (AIR-CT2504-5-K9 )as it is in domain A , all other AP also in domain A. Now can i change the domain of access point or what is the possible solution to add new AP with controller ? is it possible to run both domain (A, C)  at the same time with one controller ?   

Answer 1

Migrating Access Points from the -J Regulatory Domain to the -U Regulatory Domain
The Japanese government has changed its 5-GHz radio spectrum regulations. These regulations allow a field upgrade of 802.11a 5-GHz radios. Japan allows three frequency sets:
•J52 = 34 (5170 MHz), 38 (5190 MHz), 42 (5210 MHz), 46 (5230 MHz)
•W52 = 36 (5180 MHz), 40 (5200 MHz), 44 (5220 MHz), 48 (5240 MHz)
•W53 = 52 (5260 MHz), 56 (5280 MHz), 60 (5300 MHz), 64 (5320 MHz)
Cisco has organized these frequency sets into the following regulatory domains:
•-J regulatory domain = J52
•-P regulatory domain = W52 + W53
•-U regulatory domain = W52
Regulatory domains are used by Cisco to organize the legal frequencies of the world into logical groups. For example, most of the European countries are included in the -E regulatory domain. Cisco access points are configured for a specific regulatory domain at the factory and, with the exception of this migration process, never change. The regulatory domain is assigned per radio, so an access point's 802.11a and 802.11b/g radios may be assigned to different domains.
For more information please refer to the link-
http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/321930RN.html#wp111182