What Teams SystemEventMessages are returned by the Export API?

Graham Norris 61

I am trying to export Teams content for meetings. The unique thing about a meeting compared to a chat is that a chat tends to go on and on indefinitely, but a meeting normally has a discrete ending and once it's over, people tend to leave. This means that after a meeting is over, when you query its participants the list has a higher probability of being incomplete or wrong than a channel or IM/MIM chat conversation would. So, I am interested in using join/leave/member added/ member deleted system event messages to fill in these gaps.

The Export API documentation says that Export does support member added and leave events.

https://video2.skills-academy.com/en-us/microsoftteams/export-teams-content

control

But it hasn't been updated for a few years and may be incomplete.

I have seen that both MemberJoined/MemberLeft as well as MemberAdded/MemberDeleted events come from the regular user chat message API, v1/users/userId/chats/chatId/messages. This is using Graph Explorer with delegated permissions.

Here are real join/leave/member-added/member-deleted events in the Teams GUI: Capture

And here are the representations of these events returned in the v1 Graph ChatMessage API using Graph Explorer:

joined

added

I am not seeing any of these events using the Export API. By Export API I mean https://graph.microsoft.com/v1.0/users/userId/chats/getAllMessages() Does anyone know whether they are supposed to come?

For this I'm using application level permissions. I am correctly licensed and lots of messages do come; but they're all chat messages and I don't get my join/leave/added/deleted events.

JimmyYang-MSFT 52,031 Reputation points Microsoft Vendor

2024-09-05T07:53:18.9566667+00:00

Hi @Graham Norris

Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is not in our support scope. So I will also add Teams development tag to your thread. Thanks for your understanding!
Nivedipa-MSFT 3,016 Reputation points Microsoft Vendor

2024-09-06T05:42:27.7566667+00:00

@Graham Norris - Thanks for reporting your issue. We are checking this with engineering team, we will let you know once we get any updates from them.
Nivedipa-MSFT 3,016 Reputation points Microsoft Vendor

2024-09-16T17:37:05.7733333+00:00

@Graham Norris - We received a reply from the engineering team stating that the documentation needs to be updated with the new list. They will work on it in the next few days. We do support other SystemEvent messages. We will let you know once the document is updated.
Graham Norris 61 Reputation points

2024-09-16T17:43:02.67+00:00

.....
Graham Norris 61 Reputation points

2024-09-16T17:50:47.1166667+00:00

Thanks @Nivedipa-MSFT
I am really confused why these join/leave/member added/deleted events should be left out of Export. They're extremely high value and are included in both Webhook and the free Message API if I'm not mistaken. Knowing who said what to who is centrally important to understanding messaging on Teams.
Graham Norris 61 Reputation points

2024-09-17T23:26:55.75+00:00

@Nivedipa-MSFT I have been doing some more experimentation; it looks like Guest and Anonymous users who are in a meeting chat are never added to the chat members, but can post messages there.

They are listed in SystemEvents; but this data is never made available in Export API, only in the regular free tier Message API and possibly in Webhook events. Can you explain the reason why this is the case? I would love for Export API to just have everything I need.

Share via

What Teams SystemEventMessages are returned by the Export API?

Your answer