Failed creating events subscriptions: Operation: Create; Exception: [Status Code: ServiceUnavailable; Reason: Target resource 'xxxx' hosted on database 'xxxx' is currently on backend 'Unknown'

Question

Hi, I'm trying to subscribe to the calendar events to listen when user create or update an event. Just calling POST on https://graph.microsoft.com/v1.0/subscriptions with the following body

{
    "changeType": "created,updated",
    "notificationUrl": "https://mi-domain/calendar/microsoft/",
    "resource": "me/events",
    "expirationDateTime": "2024-03-26T18:23:45.9356913Z",
    "clientState": "state-token"
}

Currently the expirationDateTime is respecting the maximum limit of 3 days, I'm using 2 days.
When I run this on my service in Python or using the Graph Explorer get this error

{
    "error": {
        "code": "ExtensionError",
        "message": "Operation: Create; Exception: [Status Code: ServiceUnavailable; Reason: Target resource '0003bffd-6271-34ad-0000-000000000000' hosted on database '86eaab21-15e5-4e4b-9d1c-2342c9c45663' is currently on backend 'Unknown']",
        "innerError": {
            "date": "2024-03-25T06:20:57",
            "request-id": "811d03f8-1898-4c04-afe6-c64866c7de25",
            "client-request-id": "14a6b561-a648-d16a-66bf-b896c4627c5d"
        }
    }
}

Currently the access token that I'm using has the following scopes

Calendars.Read Calendars.ReadBasic Calendars.Read.Shared

I have been reading about this problem but there is not a concrete solution or explanation about the errors that I can be making during the request.

Answer 1

My problem was solved and was related to the shared scopes that I was requesting and also used for testing a corporate account without an active plan.

Answer 2

My problem was solved and was related to the shared scopes that I was requesting and also used for testing a corporate account without an active plan.