Unable to access / endlook / masterCategories in Microsoft Graph API

Question

It seems that endpoints starting with /outlookreturn this error:

GET https://graph.microsoft.com/beta/me/outlook/masterCategories
{
    "error": {
        "code": "RequestBroker-ParseUri",
        "message": "Resource not found for the segment 'Outlook'.",
        "innerError": {
            "request-id": "a75d1c9a-c6ae-4b69-83ca-fc0e467a4ad7",
            "date": "2017-12-26T17:23:17"
        }
    }
}

I have allowed scopes mail.read user.read mailboxsettings.readwrite, so I must have access to the user inbox categories, but the beta API endpoints starting with "Outlook" mentioned in this post:

https://blogs.msdn.microsoft.com/exchangedev/2017/10/09/new-outlook-apis-in-the-microsoft-graph-rooms-rules-categories-headers-and-time-zones/

unavailable, am I doing something wrong?

Keep in mind that I tested this endpoint and it works great: https://graph.microsoft.com/beta/me/mailFolders

: https://graph.microsoft.com/beta/me/outlook/masterCategories .

Answer 1

, /beta /beta. beta/me/outlook/ ( /masterCategories) MSA/Personal.

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