Scope1,2,3 of overseas subsidiaries is essential?

I have a question regarding the SBT application.
This is a case where a company operating in Japan, Korea and China as a group is seeking SBT certification. (Parent company is in Japan, with subsidiaries in Korea and China)
When applying for SBT, do we need to calculate all Scope 1, 2, and 3 for the Korean and Chinese subsidiaries as well as the Japanese company?

If it is possible to apply for the Japanese company first, and then reapply for the Korean and Chinese companies later, I would like to proceed with that.
We look forward to your answer.

Per FI-C5, parent companies must include the emissions of all subsidiaries in their target submission, in accordance with boundary criteria above.