Why Do I Receive Only the Recording Completion Callback But Not the Recording Start Callback After Configuring Recording Callbacks?

The value of the notify_event_subscription parameter is not set when you call the API for Creating a Recording Callback. As a result, the default value RECORD_FILE_COMPLETE of this parameter is used and only the recording completion callback is sent. To receive the recording start callback, call the API for Modifying a Recording Callback to modify the recording callback configuration, and set the notify_event_subscription parameter to RECORD_NEW_FILE_START.