Reopen Closed Appointment Using JavaScript in D365 CRM

Introduction:

When an appointment is closed in D365 CRM, the appointment is not editable. There can be a requirment when Users wish to edit the closed appointment and add some missing data. This can be achieved by adding a new button on the Appointment form.

Solution:

Add a new button and use below JavaScript.

var AppointmentForm = 
{
       setActive:function(primaryControl)
 {
        var formContext= primaryControl;
        var status= formContext.getAttribute("statecode").getValue();
        if (status==1)
        {
            formContext.getAttribute("statecode").setValue(0);
            formContext.getAttribute("statuscode").setValue(1); 
            formContext.data.save();
        }
    }
}

To understand the status and status reason details, you can refer the Microsoft document- https://docs.microsoft.com/en-us/dynamics365/customer-engagement/web-api/appointment?view=dynamics-ce-odata-9

Note that, you need to update both statecode and statuscode, trying to update only one will give a system error.

Conclusion: You can Activate and edit the appointment, once done user can click on Mark Complete, to close the appointment.