Booking API 'calendarView' returns an 'An error has occurred.' 500 error

Question

I want to retrieve the calendar events for a booking bussiness via the following GET request in Postman:

https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/******@w8tlt.onmicrosoft.com/calendarView?start=2023-05-17T00:00:00Z&end=2023-05-18T23:59:59Z&$select=serviceName,staffMemberIds,startDateTime,endDateTime

However, Postman returns the following 500 error:

{
    "error": {
        "code": "",
        "message": "An error has occurred.",
        "innerError": {
            "date": "2023-05-17T11:37:56",
            "request-id": "2011a326-c174-48cc-b29e-d81515c50304",
            "client-request-id": "2011a326-c174-48cc-b29e-d81515c50304"
        }
    }
}

Answer 1

Hello Bernard Polman,
Thank you for reaching out.
I have doubled checked your http request, it shows everything fine. I have tested this from my end and I was able to get the results I needed. https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/******@XXXXX.com/calendarView?start=2023-05-01T00:00:00Z&end=2023-05-17T00:00:00Z&$select=serviceName,staffMemberIds,startDateTime,endDateTime

Please note that this end point does not support for application permissions, and I suspect that might be the root cause for your case. Here is the reference KP;- https://learn.microsoft.com/en-us/graph/api/bookingbusiness-list-calendarview?view=graph-rest-1.0#permissions

I am only able to reproduce the same error, when I use application permissions, but with delegate permissions, it works fine.
Hope this helps.
Thanks.
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