Create a teams team error when using Microsoft graph api

Question

I just follow this official document to excuse create a team.Create team I also using the client credential flow and apply all the permissions advised. In Postman, I used this message to call

{
   "[email protected]":"https://graph.microsoft.com/v1.0/teamsTemplates('standard')",
   "displayName":"My Sample Team",
   "description":"My Sample Team’s Description",
   "members":[
      {
         "@odata.type":"#microsoft.graph.aadUserConversationMember",
         "roles":[
            "owner"
         ],
         "userId":"xxxxx-61d8-43db-94f5-81374122dc7e"
      }
   ]
}

but unfortunately will get such error message, I'm fully confused on this unknown Error

{
  "error": {
    "code": "UnknownError",
    "message": "",
    "innerError": {
      "date": "2020-11-02T05:32:08",
      "request-id": "2955c466-f25f-42f5-ba89-4a522c428b70",
      "client-request-id": "2955c466-f25f-42f5-ba89-4a522c428b70"
    }
  }
}

I also tried to execute it in C# code

var team = new Team
        {
            DisplayName = "My Sample Team558",
            Description = "My Sample Team’s Description558",
            Members = new TeamMembersCollectionPage() {
                new AadUserConversationMember
                {
                    Roles = new List<String>()
                    {
                        "owner"
                    },
                    UserId = "9xxxxxc9-f062-48e2-8ced-22xxxxx6dfce"
                }
            },
            AdditionalData = new Dictionary<string, object>()
            {
                {"[email protected]", "https://graph.microsoft.com/v1.0/teamsTemplates('standard')"}
            }
        };
 var result = await graphServiceClient.Teams
            .Request()
            .AddAsync(team);

This async call will be executed successfully and a new teams team will be also created, but the result return null, that means I could not get the team id from the result. I could not go to the next step, such as add a new channel etc. I'm using Microsoft.Graph v3.18.0.0 in my C# code。

UPDATE Here is the accesstoken

In summary, in current graph API if you call the API without a proper permission. Such as did not grant the permissions ,grant admin consent, access token without a role, you will get the unknown ERROR. — Kevin YANG
– Kevin YANG, Commented Nov 3, 2020 at 7:16

Carl Zhao · Accepted Answer · 2020-11-02 10:38:32Z

1

I can easily reproduce your problem. The cause of this error may be that you did not grant the necessary permissions or did not grant the admin consent for this permission.

Therefore, you need to check that you have granted the necessary application permissions and Permission is granted to the admin consent.

code:

GraphServiceClient graphClient = new GraphServiceClient( authProvider );

var team = new Team
{
    DisplayName = "My Sample Team",
    Description = "My Sample Team’s Description",
    AdditionalData = new Dictionary<string, object>()
    {
        {"[email protected]", "https://graph.microsoft.com/v1.0/teamsTemplates('standard')"}
    }
};

await graphClient.Teams
    .Request()
    .AddAsync(team);

answered Nov 2, 2020 at 10:38

Carl Zhao

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14 Comments

Kevin YANG Over a year ago

Yes,if we didn't set the permission will also get this unknown error. But actually I already granted all these permissions under my application.

Carl Zhao Over a year ago

@KevinYANG Use jwt.ms to parse your access token and provide screenshots.

Kevin YANG Over a year ago

regarding to my second question,the result return null.I found this link (AddAsync(team) returns null)<github.com/microsoftgraph/msgraph-beta-sdk-dotnet/issues/… how should I get the team id after we request a new team via API

Kevin YANG Over a year ago

,Please see the screenshot in the question UPDATE

Kevin YANG Over a year ago

I'm using client credential flow to get the access token when tested in postman

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