To show Shopping ads in South Korea, you'll need to have a valid Business Registration Number (BRN), and the prices on your website landing pages will need to appear in South Korean won.
Note: Currency conversion is not available in South Korea.
You can manage your BRN in the Business info section under Settings in your Merchant Centre. The Business info section contains the Details tab for editing your BRNs. Learn more about providing an accurate Business Registration Number.
- In your Merchant Centre account, click Settings 
in the left navigation menu.
 - Select Business info.
 - Under the 'Details' tab, click Edit business details.
 - Scroll down until you find 'Korean business registration number'. Enter your 10-digit registration number.
 - Click Save.