Title: Error 7504 - Cannot join Teams meeting with Application-hosted Media Bot

Hi,

I'm developing a Teams bot with application-hosted media for real-time audio capture and transcription.

Environment:

• App ID:
• Tenant ID:
• Region: West Europe
• VM: Windows Server 2022, .NET 8.0

What I've configured:

• Graph API permissions granted with admin consent:
• Calls.AccessMedia.All
• Calls.Initiate.All
• Calls.JoinGroupCalls.All
• Calls.JoinGroupCallAsGuest.All

Resource Account created: meetingbot@digitstore.ro
Application Access Policy created and applied globally
Teams license assigned to Resource Account
MediaPlatform initialized successfully (4 vCPU VM)
SSL certificate configured

Error when calling JoinMeetingAsync:
{
"error": {
"code": "7504",
"message": "Insufficient enterprise tenant permissions, cannot access this API"
}
}

Question:
Does this tenant need to be explicitly provisioned by Microsoft for the Graph Communications Calling API?

If yes, could you please enable it for my App ID and Tenant ID listed above?

Thank you!

No repository file or test is mentioned; start by reviewing the JoinMeetingAsync call and the Graph Communications Calling API provisioning requirements described in the report. Done means confirming whether explicit tenant provisioning is required and documenting a verified resolution or prerequisite.