Calendar API v3 - Handling Deleted Events For One-Way Sync

Question

I'm using Google Calendar API v3 to work a one-way sync from another calendar system to a Google calendar, and wondering - how should I be treating deleted Google calendar events that are not deleted in the other calendar system?

The 'cancelled'/deleted Google calendar event I attempted to update contains the ICalUID value from an event in the other calendar system (where the event is not deleted). When I try to update/revive the 'cancelled' event I get a "403: Forbidden" response, and when I try to insert a new event using that ICalUID I receive a "duplicate" event error response.

Is there any way to revive the 'cancelled' event or clear its ICalUID? Or maybe a known gotchya hidden somewhere within this scenario that I missed?

I can re-create them using a different ICalUID, but I'm hoping someone else can offer some insight from their experience before I abandon the ICalUID. Thanks!

Answer 1

Based on the Events resource, you can't update a deleted Event. You can, however, update a cancelled Event. 'Events: update' will require the calendarId and eventId with the JSON object (updated status value) in the response body.