Recently, we received a transfer of ownership for an application. While the transfer has been completed, we are encountering issues when we tried exchange the transfer identifiers for team-scoped identifiers and private email addresses. Specifically, we are only able to successfully exchange a portion of the user identifier. Following the official documentation, we performed the following steps: Obtained the interface token: Request parameters: client_id client_secret grant_type=client_credentials scope=user.migration Response: {"access_token":"xxxx","token_type":"Bearer","expires_in":3600} Generate the transfer identifier （https://developer.apple.com/documentation/sign_in_with_apple/transferring_your_apps_and_users_to_another_team） Request parameters: sub=xxxx&target=New Team ID&client_id&client_secret Response: {"transfer_sub":"xxxx"} Re-obtained the interface token: Request parameters: client_id client_secret grant_type=client_credentials scope=user.migration Response: {"access_token":"xxxx","token_type":"Bearer","expires_in":3600} Exchange identifiers： （https://developer.apple.com/documentation/sign_in_with_apple/bringing_new_apps_and_users_into_your_team） Request parameters: transfer_sub=xxxx&client_id&client_secret Response: code:400, content:{"error":"invalid_request"} Could you please help us identify the issue?