How to send activity feed notification to a user in another tenant using Graph API with Java

Question

Hi!

I'm developing a server application with Java and I want to send an activity feed notification to a user who is not in my tenant through our Teams personal app. To achieve this, I created a GraphServiceClient with Client Credentials Provider, following this tutorial: https://learn.microsoft.com/en-us/graph/sdks/choose-authentication-providers?tabs=java#client-credentials-provider

I was able to create the Graph client with client credentials. However, when I tried to send the notification using the following code:

graphClient.users().byUserId(userId).teamwork().sendActivityNotification().post(sendActivityNotificationPostRequestBody);

I received an error stating that "user id 'xxxx-xxxx-xxx' is in the tenant". How can I send a notification to a user that is not in my tenant using the Graph API with Java?

Answer 1

Hi @Test

You can't send activity feed notifications to users in other tenants.

You must add the target user as a guest to your tenant. Or configure your app as a multi-tenant app, and then add your multi-tenant app as an enterprise app to the tenant where the target users are located.

Hope this helps.

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