Forum Discussion

Microsoft

Aug 18, 2022

The endpoint getStaffAvailability returning Unknown Error

We are trying to access the endpoint https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/{bookingBusiness-id}/microsoft.graph.getStaffAvailability but it returns Unknown Error as described h...

IOOFGeoffreyThomazeau

Copper Contributor

Jun 25, 2025

I have the exact same issue. My application has bookings.Manage.All Application but I get unknownError , Cant get it to work.
To get the application I use the following is that correct ?

curl --location 'https://login.microsoftonline.com/{tenant_id}/oauth2/v2.0/token' \

--header 'Content-Type: application/x-www-form-urlencoded' \

--data-urlencode 'client_id={client_id}' \

--data-urlencode 'scope=https://graph.microsoft.com/.default' \

--data-urlencode 'grant_type=client_credentials' \

--data-urlencode 'client_secret={client_secret}'

IOOFGeoffreyThomazeau

Copper Contributor

Jul 01, 2025

After a lot of try and error. I finally got it working.

Application permission need to have Bookings.Read.All. If you have only Bookings.manage.All the endpoint won't work which doesn't make sense according the documentation mentioning higher permission : Booking.Manage.All