I solved the issue. My ID was called AppointmentId in my Appointment object, as soon as I renamed that to Id to match your scheduler object, everything worked fine, create, removed, and changed events.
AKAlagumeena Kalaiselvan Syncfusion Team February 3, 2020 05:18 AM
Thanks for your update!
We are happy that your issue has been resolved. Please keep in touch with us, if you need further assistance.