Yahoo! JAPAN Ads API | Developer Center
日本語2025/03/03
Termination of the legacy conversion tracking tag and site retargeting tag system
Updates
March 3, 2025: We completed this change.
January 21, 2025: We added "Request to customers."
November 21, 2024: We posted this article.
Products
Yahoo! JAPAN Ads Search Ads
Yahoo! JAPAN Ads Display Ads
Date
February 28, 2025
*We stop communication using the legacy tags starting March 1, 2025.
Summary
Yahoo! JAPAN Ads terminate the legacy tag system because a certain period has passed since the end of support. As a result, requests to the following domains may fail due to the inability to communicate using the legacy tags.
| Products | Domain | Description |
|---|---|---|
| Search Ads | b91.yahoo.co.jp | Domain for the legacy conversion tag |
| b97.yahoo.co.jp | Domain for the legacy site retargeting tag | |
| Display Ads | b90.yahoo.co.jp | Domain for the legacy conversion tag |
| b92.yahoo.co.jp | Domain for the legacy site retargeting tag |
Websites with legacy tags still in place may experience issues with JavaScript functionality after the system termination date. For this reason, kindly check your site's source code and settings to remove any tags that include these domains.
Notes
If you don't remove the legacy tags, JavaScript may stop functioning on some websites, depending on their design. To avoid unexpected issues, kindly remove them.
Comments
The legacy tags stopped receiving support in February 2024.
Learn about end of support for previous conversion tag and site retargeting tag.