We've enabled calendar integration following the v16 documents, got that to work, then enabled individual calendar syncing. That all works as expected.
However, we've found an issue with recurring events where we receive an invitation to a recurring meeting, it gets synced to odoo, then almost immediately a duplicate meeting with myself as the organizer gets sent to all participants of the meeting including the original organizer.
I've disabled calendar syncing, removed ALL calendar entries from Odoo, then re-enabled sync. Problem occurs. At one point we added API permissions and Tried changing the O365 Entra Registered App to API permissions to Calendar.Read instead of Calendar.ReadWrite, same issue.
If calendar sync for the user is disabled the issue doesn't happen.
What are we missing?
I've seen this "Warning" in the documentation, but don't know how to interpret it as it seems whether the message originates in Outlook or Odoo, its saying an email will be generated and sent to all participants?
"If the user has any past, present, or future events on their Odoo calendar before syncing their Outlook calendar, Outlook will treat the events pulled from Odoo’s calendar during the sync as new events, causing an email notification to be sent from Outlook to all the event attendees.
To avoid unwanted emails being sent to all past, present, and future event attendees, the user must add the events from the Odoo calendar to the Outlook calendar before the first ever sync, delete the events from Odoo, and then start the sync.
Even after synchronizing the Odoo Calendar with the Outlook calendar, Outlook will still send a notification to all event participants every time an event is edited (created, deleted, unarchived, or event date/time changed), with no exceptions. This is a limitation that cannot be fixed from Odoo’s side.
In summary, once a user synchronizes their Outlook calendar with the Odoo calendar:
- Creating an event in Odoo causes Outlook to send an invitation to all event attendees.
- Deleting an event in Odoo causes Outlook to send a cancellation to all event attendees.
- Unarchiving an event in Odoo causes Outlook to send an invitation to all event attendees.
- Archiving an event in Odoo causes Outlook to send a cancellation to all event attendees.
- Adding a contact to an event causes Outlook to send an invitation to all event attendees.
- Removing a contact from an event causes Outlook to send a cancellation to all event attendees."
