An appointment conflict happens if the following is true:
You are the participant of an existing appointment. Your availability in Display as is set to one of these values: Booked, Tentativeor Absent.
You create a new appointment. Your availability in Display as is set to one of these values: Booked, Tentativeor Absent. The new appointment is at the same time as an existing appointment.
As soon as you click on Conflict detected is displayed. The appointments causing the conflict are displayed.
, the message