Using PowerApps "Send a Microsoft Graph HTTP request"

Hello @Mikel2024,
You're on the right track using the sendActivityNotification endpoint, but there are a few important details and common pitfalls that can cause inconsistent delivery of activity feed notifications in Teams.

To ensure your app can send activity notifications via Microsoft Teams, please make sure the following requirements are met:

• The app registration must have the TeamsActivity.Send application permission granted and admin consented in Azure Active Directory (Azure AD).
• The app must be installed in the target team and for the recipient user.
• The recipient must be a valid Azure AD user and a member of the team.
• The topic.value should be a valid entity URL, such as a channel or team. For team-wide notifications, you can use the following format:
  https://graph.microsoft.com/v1.0/teams/{teamId}
• If using a custom activityType, please ensure the corresponding template is defined and all required parameters are provided. Alternatively, you may use "systemDefault" for basic notifications.
• The Teams app (your app registration) must be installed for every user you intend to notify. You can use Microsoft Graph API to perform app installations for users, if necessary.
• Finally, please double-check that the userId is accurate and the user is a member of the team.
  
  

  // POST https://graph.microsoft.com/v1.0/teams/{teamId}/sendActivityNotification
  {
    "topic": {
      "source": "entityUrl",
      "value": "https://graph.microsoft.com/v1.0/teams/{teamId}"
    },
    "activityType": "systemDefault",
    "previewText": {
      "content": "A new or updated SharePoint page is available"
    },
    "recipient": {
      "@odata.type": "microsoft.graph.aadUserNotificationRecipient",
      "userId": "569363e2-4e49-4661-87f2-16f245c5d66a"
    },
    "templateParameters": [
      {
        "name": "systemDefaultText",
        "value": "Check out the updated page: https://yourtenant.sharepoint.com/sites/yoursite/SitePages/yourpage.aspx"
      }
    ]
  }

   

  Reference Document-
  1. Send activity feed notifications to users in Microsoft Teams - Microsoft Graph | Microsoft Learn
  2. Install app for user - Microsoft Graph v1.0 | Microsoft Learn