Afterwards the attendee confirms the event, the event id has changed in the orginizer calendar

Kwiatkowski, Constantin 1 Reputation point
2022-08-06T04:56:24.68+00:00

For instance you create a new event as organizer and invite another user as attendee. If the attendee confirms the coming then the event has a new event id. You as organizer can's find the event by its event id anymore. I checked the notifications and I saw there was a delete notification of the event. So, Microsoft deletes the event of the organizer's calendar and replaces the event with the event from the attendee's calendar. Don't ask me why they do that, maybe that is a bug. Using MS Graph API version 1.0v. Hope that was helpful. Check your notifications that your app receives is my approach.

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
10,300 questions
0 comments No comments
{count} votes

1 answer

Sort by: Most helpful
  1. ShivaniRai-MSFT 2,726 Reputation points
    2022-08-16T16:35:32.933+00:00

    Hi @Kwiatkowski, Constantin ,

    I am not able to replicate this issue but according to this documentation, For an event the id property is composite value based on other properties and this value changes when the item is moved from one container (such as a folder or calendar) to another. That might be the case in your scenario.
    I would recommend you to raise a support case with Microsoft Graph for more clarity on this, a Support Engineer will be able to assist you better. You can raise support ticket from http://aad.portal.azure.com/ or https://admin.microsoft.com/#/support/requests.

    If the response is helpful, please click "Accept Answer" and upvote it. If you have extra questions about this answer, please click "Comment".

    0 comments No comments