Granular business events are raised only by V2 API calls.
Business object events can be raised by:
V2 and business object API calls.
TCA Business Objects Events: Raise Events Program
Set the HZ: Format Business Object Business Events as Bulk profile option to Yes to format business object events as bulk events. This profile option does not apply to granular events. TCA tracks and collects business events as they occur but raises them as a group the next time you run the Raise Events concurrent program. This program determines which business objects were created or updated for the time period and raises each of the eight business object events at most only once. For example, the Raise Events program raises a single Organizations Created business event for all Organization business objects created since the last time the programs ran. This is true for all eight business events.
If you set this profile option to No, then each business object API call raises one equivalent business event per business object.
Set this profile option only if you use business object events. It has no default setting.