Is gemini-1.5-flash-002 available in asia-northeast1 region?

Hi, we were trying to use gemini-1.5-flash-002 in asia-northeast1 region, but we are getting the following error (both in Vertex AI Studio and via API):

Error Message: 「Project XXX is not allowed to use Publisher Model XXX/locations/asia-northeast1/publishers/google/models/gemini-1.5-flash-002

Status: Undefined parameter - status error code: 9

As long as we tried, the model is available in all other regions (and we could also run gemini-1.5-pro-002) in asia-northeast1 region. We initially thought that something is wrong in our account, but I found some other person who is suffering from this issue (in Japanese):

Thanks!