Event update does not work correctly

[ShilovMax]

Hi!
I am creating a booking in exchange(I am using outlook web app) and then pulling it into the code

    events = account.calendar.view(start=start, end=end)

and everything is great, events are coming in. If I change the name of the event in exchange, it will be pulled into python.

event.subject=“New Subject”
event.save(update_fields=['subject'])

But if I change the name of the event from the code, it is not displayed in exchange itself, although if I get calendar.view() it will have a new name.

I try to update attendee

simple_attendee = Attendee(
    mailbox=Mailbox(
        name='SomeName',
        email_address='SomeEmail,
        routing_type='SMTP',
        mailbox_type='Mailbox',
        item_id=None,
    ),
    response_type='Unknown',
    last_response_time=None,
    proposed_start=None,
    proposed_end=None,
)

event.required_attendees.append(simple_attendee)
event.save(update_fields=['required_attendees'])

But I get an error

exchangelib.errors.ErrorInvalidPropertySet:  Set action is invalid for property. (field: FieldURI(field_uri='calendar:RequiredAttendees'))

How can I solve this problem?

[ecederstrand]

This might be because the item you are trying to change is an occurrence and not either a master item or a non-recurring item. I'm not sure required_attendees update is possible on a single occurrence of a recurring item.

Can you verify whether required_attendees works for the other two item types?