Power Platform Community Forum Thread Details

I've created custom connector using the Booking API. When trying to create an appointment, I get the following error:

{

"error": {

"code": "InvalidModel",

"message": "changes: Cannot create an abstract class.",

"innerError": {

"date": "2022-03-24T04:03:32",

"request-id": "8bd7b2c5-e8bc-4077-affa-e7029261cce4",

"client-request-id": "8bd7b2c5-e8bc-4077-affa-e7029261cce4"

}

This error only occurs when I add an existing customer (customerid) to the appointment but if I let the customerid blank, the flow works. Unfortunately, it is useless since I need the appointment to include the customer.

Any help is appreciated...

Categories:

Using connectors

Hi @astheo,

Have you tried including the @odata.type in the body of the http request?

For example, for booking details is "@odata.type":"#microsoft.graph.bookingAppointment"... customer details is "#microsoft.graph.bookingCustomerInformation"... for event date and time is "@odata.type":"#microsoft.graph.dateTimeTimeZone"

PATCH https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/Contosolunchdelivery@contoso.onmicrosoft.com/appointments/AAMkADKnAAA=
Content-type: application/json

{
"@odata.type":"#microsoft.graph.bookingAppointment",
"endDateTime":{
"@odata.type":"#microsoft.graph.dateTimeTimeZone",
"dateTime":"2018-05-06T12:30:00.0000000+00:00",
"timeZone":"UTC"
},
"startDateTime":{
"@odata.type":"#microsoft.graph.dateTimeTimeZone",
"dateTime":"2018-05-06T12:00:00.0000000+00:00",
"timeZone":"UTC"
}
}