Malfunction on Graph API on Update Events + GetSchedule

Question

Unfortunately there is currently a malfunction in the "Microsoft Azure Graph API" (https://learn.microsoft.com/en-us/graph/use-the-api)

Error pattern: Room bookings can be edited via the Graph API, e.g. via PATCH 'https://graph.microsoft.com/v1.0/users/{id | userPrincipalName}/events/{id}', these changes e.g. to the subject of an event can be seen immediately in Outlook. If you continue to query 'https://graph.microsoft.com/v1.0/me/calendar/getSchedule', however, the old subject remains visible. Only when a change is made, e.g. via Outlook/Exchange, can the change be seen again via the Graph API.

Is there a poll to fetch new data from Exchange's Graph API, or is it just a bug? The behavior has been present for about 4-5 days. Before running for 3 years.

Answer 1

Hello Maurice Lohse,
Thank you for your post.
I have done some testing from my end too. I thought the issue could be related to propagation, issue but it's not.
I was able to reproduce the issue from my end. I waited for 30 minutes after I made changes to the booking via Graph PATCH but the updated event info is not visible with 'https://graph.microsoft.com/v1.0/me/calendar/getSchedule' call. It shows old Subject.
The issue must be related to a bug therefore, I would recommend you create a support ticket by tagging Microsoft Graph.
Here is the link to open a ticket;- https://developer.microsoft.com/en-us/graph/support.

Let me know, if that answers your question.
Thanks