The endpoint https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/{bookingBusiness-id}/microsoft.graph.getStaffAvailability is returning 'Uknown Error'

Question

We are trying to access the endpoint https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/{bookingBusiness-id}/microsoft.graph.ge... but it returns Unknown Error as described here: microsoft.graph.getStaffAvailability returns UnknownError and has a N/A Permission · Issue #2043 · m...

The endpoint only supports application permissions, and we are sending the correct scopes (https://graph.microsoft.com/.default). We are still however getting Unknown Error

Answer 1

Looks like there are a lot of customers who are still stuck on this issue. The workaround does not seem to be working for everyone and we cannot figure out why

Answer 2

Apparently somebody else who had this problem found a way to get the request through:
https://stackoverflow.com/questions/73370299/unknown-error-in-microsoft-graph-api-get-staff-availability-in-ms-bookings

This person found out this currently only works if you set the timeZone to UTC. Most likely a bug on Graph's end.