When making /calendars/free-busy call to a Exchange Web Services, Microsoft provider
We do not currently support intervals of less than 30 minutes between start_time and end_time for EWS accounts. Please ensure the difference between start_time and end_time is greater than 30 minutes.
Endpoint / Log:
- Microsoft does not return free-busy slots less than 30 minutes
- If you are looking for slots <30 minutes use the availability endpoint, however this is 4x slower than free-busy
- On the application level do not allow timeslots <30 minutes