id|message
FILE_MIGRATE_X|The file to be accessed is currently stored in DC{x}
PHONE_MIGRATE_X|The phone number a user is trying to use for authorization is associated with DC{x}
NETWORK_MIGRATE_X|The source IP address is associated with DC{x} (for registration)
USER_MIGRATE_X|The user whose identity is being used to execute queries is associated with DC{x} (for registration)