Actually, I had created the team's integration using ServiceNow. When a message is to be posted into the existing channel I'm getting the insufficient Privileges error 403 can anyone help me regarding it.
like what is the content-type: application/json & also the payload content and the endpoint format as i'm using this graph Api format for the reference https://graph.microsoft.com/v1.0/teams/<team-id>/channels/<channel-id>/messages
