We finally found that creating a new identifier and a new p8 file can call this API normally. If the broadcast function is directly enabled in the old project, the request API form channel management cannot be performed.

apns-request-id: 6330D701-4C13-A262-00E6-9D9F2CF0E0E5 exact time: 2024-11-26 18:27:04 GMT+8, the timestamp -> 1732616824 I'm not sure if this already counts as successfully binding the bundle ID for broadcast push notifications. For my JWT Bearer, I used the PRIVATE KEY from the .p8 certificate.