What works totally fine in my case is to register a web hook subscription on the graph api for a user
/user/{id}/events
What I do not get to work is a registration for groups:
/groups/{id}/events
The error message is:
Status Code: Forbidden; Reason: Access is denied. Check credentials and try again
How can I find out what is missing concretely? What are the permission that are required to do a subscription on calendar events on a user group instead of doing it on a user. At the end the idea is to subscribe to all events of all users of the given group. Or is this not possible with the GraphAPI?
Actual question, irrelevant of all the limitations that the graph-api has as discussed here which is also mentioned in this question:
Would
/groups/{id}/events
If permission are set correctly be intended to react on changes to the calendars of all users in that group? If not what would be intended way to do this with the graph-api?
I posted this idea with Microsoft: https://techcommunity.microsoft.com/t5/microsoft-365-developer-platform/be-able-to-subscribe-to-calender/idi-p/3297497
