Graph API for 365 Teams Chats throttled to 20 messages per chat

Question

In the wake of the new beta API for it, I have written a script that exports Teams one to one chats to a text file. This is so that, after migrating to a new tenant, my users can have their chat history in some place. After finishing the code and trying it on my first user, I found that I can only pull the most recent 20 messages per chat.

Here is the API command I am using: https://github.com/microsoftgraph/microsoft-graph-docs/blob/master/api-reference/beta/api/chatmessage-list.md

Is there any way to turn off throttling, or is there some step I am missing so that I can export all chat messages? I'm new to the Graph API.

Answer 1

It is not causing because of throttling issue.

Graph API implements paging for certain API. For List chat messages API, 20 message is the limit currently. The API response has "@odata.nextLink" property with the link to fetch next 20 messages.

Sample Response

"@odata.context": "https://graph.microsoft.com/beta/LongUrlShort/messages",
"@odata.count": 20,
"@odata.nextLink": "https://graph.microsoft.com/beta/me/chats/LongUrlhSort",

So you need to handle it while calling the API. You can make the API call in loop and get all the records.

Answer 2

You can use the query parameter ?top=30 to get the top 30 messages. There is no documentation on this.

Here is the reference URL. https://techcommunity.microsoft.com/t5/microsoft-teams/ms-teams-graph-api-number-of-messages-returned-by-get-messages/m-p/819565

In my case, I found that it also has a limit of 50.

i.e.

?top=50