Cannot update Bookings appointment to have additional customers

Question

Microsoft Graph API v1 for Bookings states that you can update the customers field for an existing appointment
https://learn.microsoft.com/en-us/graph/api/bookingappointment-update?view=graph-rest-1.0&tabs=csharp

Doing so results in a vague exception (Microsoft.Graph.ServiceException)

   Message: An error has occurred.  
   Inner error:  
   	AdditionalData:  
   	date: 2022-01-14T18:04:47  
   	request-id: 42a99059-024a-4f10-9396-4bae19925fae  
   	client-request-id: 42a99059-024a-4f10-9396-4bae19925fae  
   ClientRequestId: 42a99059-024a-4f10-9396-4bae19925fae  

The code I'm using to do this is very simple. Please advise.

   var updatedAppointment = await _graphServiceClient.Solutions  
                           .BookingBusinesses["bookings-business-id"]  
                           .Appointments["existing-appointment-id"]  
                           .Request()  
                           .UpdateAsync(new BookingAppointment  
                           {  
                                 Customers = new List<BookingCustomerInformation>  
                                 {  
                                       new BookingCustomerInformation { CustomerId = "customer-1-id" },  
                                       new BookingCustomerInformation { CustomerId = "customer-im-trying-to-add-id" }  
                                 }  
                            });  

Answer 1

Hi @Jason Rea ,

Currently there appears to be a issue with update appointment for call to pass, all the properties(except location) in the customers array are required.

Hope this helps.

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