The channel was successfully created using the Graph API, but user2 failed to join

Question

The channel was successfully created using the Graph API, but user2 failed to join.
What is the reason for this?

create channel API:
https://graph.microsoft.com/v1.0/teams/{{TeamId}}/channels

Post Body：

{
      "@odata.type": "#Microsoft.Graph.channel",
      "membershipType": "private",
      "displayName": "TestPriv2",
      "description": "This channel is where we debate all future architecture plans",
      "members":
        [
            {
                "@odata.type": "#microsoft.graph.aadUserConversationMember",
                "user@odata.bind": "https://graph.microsoft.com/v1.0/users('user1id')",
                "roles": ["owner"]
            },
            {
                "@odata.type": "#microsoft.graph.aadUserConversationMember",
                "user@odata.bind": "https://graph.microsoft.com/v1.0/users('user2id')",
                "roles": []
            }
        ]
    }

Answer 1

@leeys ,

Do you try to add members from the UI?

As we are mainly responsible for general issue of Microsoft Teams. Your question which is involved in development is not supported by us.

I saw the example 2 in this link, it only contains one user. Perhaps, it needs to specific the role of user2 as “member”.

To get better response, you can post this case in Microsoft Teams developer forum. You will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction. Thank you for your understanding.

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