LY Corporation launched "Business ID" in June 2025 by integrating "Yahoo! JAPAN Business ID" and "LINE Business ID," enabling customers to use Yahoo! JAPAN and LINE services for businesses with a single ID. For customers who have IDs for both services, we provide the "Business ID integration" feature, which allows you to specify the IDs to be integrated.
As many customers have already completed the integration process, we will discontinue the integration feature. IDs that have not yet been integrated will be automatically integrated by the system. As a result, all customers will be able to use services for businesses with a single "Business ID."
Along with the system-based Business ID integration, we will also discontinue the feature for undoing Business ID integration. See the following sections for details.

LY Ads

October 13, 2026 (Tue)
*The schedule is subject to change.

IDs that have not been integrated into "Business ID" as of the scheduled date will be automatically integrated by the system. You cannot specify which IDs will be integrated.
We will also discontinue the "Business ID integration" feature, which allows you to specify the IDs to be integrated. After the scheduled date, you will no longer be able to specify and integrate your "Yahoo! JAPAN Business ID" and "LINE Business ID" yourself. If you want to specify the IDs to be integrated, complete the integration process yourself before the scheduled date.
For details about ID integration, see "Integrate your Business ID."

● Even if your IDs are integrated by the system, the character strings of the IDs you currently use will not change.
● When you sign in for the first time after integration, you can continue using the services with your current ID by agreeing to the "Business ID Terms of Use." Customers using "LINE Business ID" do not need to agree again because the "Business ID Terms of Use" have been applied since June 30, 2025.

October 27, 2026 (Tue)
*The schedule is subject to change.

Along with the system-based ID integration, we will also discontinue the feature for removing Business ID integration. If you want to remove the integration of an integrated Business ID, complete the process as soon as possible.
For instructions on undoing the integration, see "ビジネスIDの統合を解除したい"(available in Japanese).

The Business IDs you can remove the integration from vary depending on the date you remove the integration.

■Date integration is removed: On or before October 12, 2026 (Mon)
All integrated Business IDs are eligible.

■Date integration is removed: From October 13, 2026 (Tue) through October 27, 2026 (Tue)
Only Business IDs for which you specified and integrated your "Yahoo! JAPAN Business ID" and "LINE Business ID" yourself by October 12, 2026 (Mon) are eligible. Business IDs integrated by the system cannot be removed.

*For details, including the conditions for removing integration, see the Document in "Comments."

For details, download and review the following Document(available in Japanese).