How to subscribe to messages in a channel that mention several users? (Graph API)

Question

Hi everybody!

There is the possibility to subscribe for notifactions, when a user is mentioned in a new message in a team channel (https://learn.microsoft.com/en-us/graph/teams-changenotifications-chatMessage#example-3-subscribe-to-messages-and-replies-in-a-channel-without-resource-data)

I have the requirement to make a subscription for several users and want to expand the filter statement with a or operator:

/teams/team-id/channels/channel-id/messages?$filter=mentions/any(u:u/mentioned/user/id eq 'userid1') or mentions/any(u:u/mentioned/user/id eq 'userid2')  

Unfortunately I get following error:

{  
    "error": {  
        "code": "ExtensionError",  
        "message": "Operation: Create; Exception: [Status Code: BadRequest; Reason: Unable to parse filter parameter. Only supporting EQ and IN for filter statement.]",  
        "innerError": {  
            "date": "2021-07-06T09:07:20",  
            "request-id": "xxxxx",  
            "client-request-id": "xxxxx"  
        }  
    }  
}  

How can I declare a filter statement with more then one user?

Thanks in advance!

Regards
Alex

Answer 1

Try to change the filter query as below :

/teams/team-id/channels/channel-id/messages?$filter=mentions/any(u:u/mentioned/user/id in ('userid1' , 'userid2'))

Thanks,

Prasad Das

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