What should I do if "Remarketing tag is not set" is displayed in the operation navigation?

To deliver retargeting ads, you need to issue retargeting tags from the management screens of each platform like Google and Yahoo, and install them on your site. If an alert is displayed in the operation navigation, please check again whether the retargeting tag is installed on the site and whether audience data is correctly accumulated in the list. *If the site is already installed and the tag is responding correctly, there is no need for additional setting changes. Once data accumulation in the audience list is confirmed, the alert display in the operation navigation will be updated.