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Unable to Retrieve Cancelled and Exception Occurrences for Recurring Meeting Series Using Graph API

Ankur Gupta 0 Reputation points
2025-08-26T11:57:08.3733333+00:00

According to the Graph docs, this should be possible via the $expand=exceptionOccurrences parameter. So I tested the following query on a sample recurring event:

GET https://graph.microsoft.com/beta/me/events/AAMkADY1YWY4NDZlLWIwMGQtNDk3Ny04YzIwLTZkMTBhYjljMWQ3MABGAAAAAADmjcfnadEETLlwdmHxPiAhBwDRsoMe4QPhT703YoP1io2cAAAAAAENAADRsoMe4QPhT703YoP1io2cAAEdfgJMAAA=?
$select=subject,start,end,occurrenceId,exceptionOccurrences,cancelledOccurrences
&$expand=exceptionOccurrences

Here’s what I was asking Graph for:

subject, start, end → core meeting info

occurrenceId → unique identifier for a specific occurrence

exceptionOccurrences → should list the modified/rescheduled instances

cancelledOccurrences → should list which slots were cancelled

The Response

When I ran the query, I did get back the main event details along with some recurrence metadata. Here’s a snippet of what Graph returned

{
  "@odata.context": "https://graph.microsoft.com/beta/$metadata#users('130dbf6d-8a11-451b-bdd2-f9a5f620f526')/events/$entity",
  "@odata.etag": "W/"0bKDHuED4U+9N2KD9YqNnAABHJ/sEA=="",
  "id": "AAMkADY1YWY4NDZlLWIwMGQtNDk3Ny04YzIwLTZkMTBhYjljMWQ3MABGAAAAAADmjcfnadEETLlwdmHxPiAhBwDRsoMe4QPhT703YoP1io2cAAAAAAENAADRsoMe4QPhT703YoP1io2cAAEdfgJMAAA=",
  "createdDateTime": "2025-08-26T07:41:49.4443207Z",
  "lastModifiedDateTime": "2025-08-26T11:13:46.470247Z",
  "changeKey": "0bKDHuED4U+9N2KD9YqNnAABHJ/sEA==",
  "categories": [],
  "transactionId": "localevent:d3fa2faf-64b8-2df8-1b16-4bb64ee4e2c3",
  "originalStartTimeZone": "India Standard Time",
  "originalEndTimeZone": "India Standard Time",
  "iCalUId": "040000008200E00074C5B7101A82E00800000000488EBEE15C16DC0100000000000000001000000045C9FC6D54F33F41B380736C02CD275A",
  "uid": "040000008200E00074C5B7101A82E00800000000488EBEE15C16DC0100000000000000001000000045C9FC6D54F33F41B380736C02CD275A",
  "iCalUId_v2": "040000008200E00074C5B7101A82E00800000000488EBEE15C16DC0100000000000000001000000045C9FC6D54F33F41B380736C02CD275A",
  "reminderMinutesBeforeStart": 15,
  "isReminderOn": true,
  "hasAttachments": false,
  "subject": "recur bug check",
  "bodyPreview": "_____________________________________________**************************************************************\r\nMicrosoft Teams Need help?\r\nJoin the meeting now\r\nMeeting ID: 453 124 749 177 1\r\nPasscode: 4yt3xh3u\r\n**************************************************************\r\nFor organizers: Meeting options\r\n",
  "importance": "normal",
  "sensitivity": "normal",
  "isAllDay": false,
  "isCancelled": false,
  "isOrganizer": true,
  "responseRequested": true,
  "seriesMasterId": null,
  "showAs": "busy",
  "type": "seriesMaster",
  "webLink": "https://outlook.office365.com/owa/?itemid=AAMkADY1YWY4NDZlLWIwMGQtNDk3Ny04YzIwLTZkMTBhYjljMWQ3MABGAAAAAADmjcfnadEETLlwdmHxPiAhBwDRsoMe4QPhT703YoP1io2cAAAAAAENAADRsoMe4QPhT703YoP1io2cAAEdfgJMAAA%3D&exvsurl=1&path=/calendar/item",
  "onlineMeetingUrl": null,
  "isOnlineMeeting": true,
  "onlineMeetingProvider": "teamsForBusiness",
  "allowNewTimeProposals": true,
  "occurrenceId": null,
  "isDraft": false,
  "hideAttendees": false,
  "responseStatus": {
    "response": "organizer",
    "time": "0001-01-01T00:00:00Z"
  },
  "body": {
    "contentType": "html",
    "content": "<html>\r\n<head>\r\n<meta http-equiv="Content-Type" content="text/html; charset=utf-8">\r\n</head>\r\n<body>\r\n<br>\r\n<div class="me-email-text" lang="en-US" style="max-width:600px; color:#242424; font-family:'Segoe UI','Helvetica Neue',Helvetica,Arial,sans-serif">\r\n<div aria-hidden="true" style="margin-bottom:24px; overflow:hidden; white-space:nowrap">\r\n________________________________________________________________________________</div>\r\n<div style="margin-bottom:12px"><span class="me-email-text" style="font-size:24px; font-weight:700; margin-right:12px">Microsoft Teams</span>\r\n<a href="https://aka.ms/JoinTeamsMeeting?omkt=en-US" id="meet_invite_block.action.help" class="me-email-link" style="font-size:14px; text-decoration:underline; color:#5B5FC7">\r\nNeed help?</a> </div>\r\n<div style="margin-bottom:6px"><a href="https://teams.microsoft.com/l/meetup-join/19%3ameeting_NDI3N2I1MjItY2NhMi00YmYyLWFmMWYtZTFmYTgwNTVjYjY1%40thread.v2/0?context=%7b%22Tid%22%3a%222d0dd113-df9d-413b-8850-f949c022ce8e%22%2c%22Oid%22%3a%22130dbf6d-8a11-451b-bdd2-f9a5f620f526%22%7d" id="meet_invite_block.action.join_link" title="Meeting join link" class="me-email-headline" style="font-size:20px; font-weight:600; text-decoration:underline; color:#5B5FC7">Join\r\n the meeting now</a> </div>\r\n<div style="margin-bottom:6px"><span class="me-email-text-secondary" style="font-size:14px; color:#616161">Meeting ID:\r\n</span><span class="me-email-text" style="font-size:14px; color:#242424">453 124 749 177 1</span>\r\n</div>\r\n<div style="margin-bottom:24px"><span class="me-email-text-secondary" style="font-size:14px; color:#616161">Passcode:\r\n</span><span class="me-email-text" style="font-size:14px; color:#242424">4yt3xh3u</span>\r\n</div>\r\n<div style="margin-bottom:24px; max-width:532px">\r\n<hr style="border:0; background:#D1D1D1; height:1px">\r\n</div>\r\n<div><span class="me-email-text-secondary" style="font-size:14px; color:#616161">For organizers:\r\n</span><a href="https://teams.microsoft.com/meetingOptions/?organizerId=130dbf6d-8a11-451b-bdd2-f9a5f620f526&tenantId=2d0dd113-df9d-413b-8850-f949c022ce8e&threadId=19_meeting_NDI3N2I1MjItY2NhMi00YmYyLWFmMWYtZTFmYTgwNTVjYjY1@thread.v2&messageId=0&language=en-US" id="meet_invite_block.action.organizer_meet_options" class="me-email-link" style="font-size:14px; text-decoration:underline; color:#5B5FC7">Meeting\r\n options</a> </div>\r\n<div style="margin-top:24px; margin-bottom:6px"></div>\r\n<div style="margin-bottom:24px"></div>\r\n<div aria-hidden="true" style="margin-bottom:24px; overflow:hidden; white-space:nowrap">\r\n________________________________________________________________________________</div>\r\n</div>\r\n</body>\r\n</html>\r\n"
  },
  "start": {
    "dateTime": "2025-08-26T09:30:00.0000000",
    "timeZone": "UTC"
  },
  "end": {
    "dateTime": "2025-08-26T10:00:00.0000000",
    "timeZone": "UTC"
  },
  "location": {
    "displayName": "Microsoft Teams Meeting",
    "locationType": "default",
    "uniqueId": "Microsoft Teams Meeting",
    "uniqueIdType": "private"
  },
  "locations": [
    {
      "displayName": "Microsoft Teams Meeting",
      "locationType": "default",
      "uniqueId": "Microsoft Teams Meeting",
      "uniqueIdType": "private"
    }
  ],
  "recurrence": {
    "pattern": {
      "type": "daily",
      "interval": 1,
      "month": 0,
      "dayOfMonth": 0,
      "firstDayOfWeek": "sunday",
      "index": "first"
    },
    "range": {
      "type": "endDate",
      "startDate": "2025-08-26",
      "endDate": "2025-11-26",
      "recurrenceTimeZone": "India Standard Time",
      "numberOfOccurrences": 0
    }
  },
  "attendees": [
    {
      "type": "required",
      "status": {
        "response": "none",
        "time": "0001-01-01T00:00:00Z"
      },
      "emailAddress": {
        "name": "Misha Sachdeva",
        "address": "******@soais.com"
      }
    }
  ],
  "organizer": {
    "emailAddress": {
      "name": "Ankur Gupta",
      "address": "******@soais.com"
    }
  },
  "onlineMeeting": {
    "joinUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_NDI3N2I1MjItY2NhMi00YmYyLWFmMWYtZTFmYTgwNTVjYjY1%40thread.v2/0?context=%7b%22Tid%22%3a%222d0dd113-df9d-413b-8850-f949c022ce8e%22%2c%22Oid%22%3a%22130dbf6d-8a11-451b-bdd2-f9a5f620f526%22%7d"
  },
  "calendar@odata.associationLink": "https://graph.microsoft.com/beta/users('130dbf6d-8a11-451b-bdd2-f9a5f620f526')/calendars('AAMkADY1YWY4NDZlLWIwMGQtNDk3Ny04YzIwLTZkMTBhYjljMWQ3MAAuAAAAAADmjcfnadEETLlwdmHxPiAhAQDRsoMe4QPhT703YoP1io2cAAAAAAENAAA=')/$ref",
  "calendar@odata.navigationLink": "https://graph.microsoft.com/beta/users('130dbf6d-8a11-451b-bdd2-f9a5f620f526')/calendars('AAMkADY1YWY4NDZlLWIwMGQtNDk3Ny04YzIwLTZkMTBhYjljMWQ3MAAuAAAAAADmjcfnadEETLlwdmHxPiAhAQDRsoMe4QPhT703YoP1io2cAAAAAAENAAA=')"
}

I have tried using similar v1.0 apis too, but it also gives the same type of result.

I have one deleted, one cancelled and one event shifted from the series. Still i don't get any cancelled or exception occurrences here. What is the issue here?

Another option is to use calendarview api like this

curl -X GET \
  -H "Authorization: Bearer <YOUR_TOKEN>" \
  "https://graph.microsoft.com/v1.0/me/calendar/calendarView?startDateTime=2025-08-01T00:00:00Z&endDateTime=2025-09-01T00:00:00Z&$expand=instances&$select=id,subject,start,end,seriesMasterId,type"

This also gives me just the exception occurences for the whole range of timeline but still no clue about the cancelled occurrences.

Microsoft Teams | Development
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1 answer

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  1. Steven-N 6,595 Reputation points Microsoft External Staff Moderator
    2025-08-26T13:50:37.13+00:00

    Hi Ankur Gupta

    Thanks for reaching out to Microsoft Q&A forum support

    Based on your description, I understand that you're attempting to retrieve modified and cancelled instances of a recurring event using the Microsoft Graph API. You’ve correctly used the $expand=exceptionOccurrences parameter and included cancelledOccurrences in your $select clause, but the response lacks the expected data for both modified and cancelled occurrences, even though such changes exist in the series.

    This behavior aligns with current limitations in the Microsoft Graph API. While exceptionOccurrences is intended to return modified instances and cancelledOccurrences should list the IDs of cancelled ones, these fields are not always populated as expected. According to Microsoft’s own documentation and developer feedback, these properties are listed in the v1.0 API but only reliably function in the beta endpoint.

    As stated in the Microsoft Q&A thread, “the calendar event properties cancelledOccurrences and exceptionOccurrences are listed in the v1.0 API but only work in the beta API.” Furthermore, the beta endpoint reference confirms that these features are still in preview and not yet generally available. Deleted instances are not returned at all, and calendarView only includes instances marked with isCancelled: true, excluding deleted events.

    That said, from my perspective view. To reliably retrieve modified and cancelled instances, you can try to use the beta endpoint of the Graph API as a workaround method and ensure that changes to the series are made via cancellation rather than deletion. For modified instances, continue using $expand=exceptionOccurrences. For cancelled ones, avoid deleting and instead cancel the occurrence so it remains traceable. When using calendarView, filter for isCancelled: true to detect cancellations. If tracking deletions is critical, consider maintaining a separate log or metadata store to record such actions, as the API does not expose deleted instances.

    Due to the relatively complex nature of issues related to this concern, please understand that the methods mentioned above are merely workaround solutions before seeking higher-level support.

    Hope my answer will help you, if the issue still persists, let me know in the comment section

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

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