Cannot accept change in appointment

[abijlsma]

Hello,

I cannot accept a change in an appointment. Person 1 creates an
appointment and sends in to persons 2 and 3. Then person 2 changes the
appointment but person 3 cannot accept this change because outlook
says the request is too old. How can i make certain the person 3 can
accept this change?

We work with outlook 2003 and exchange 2003.

Auke Bijlsma
Deltaisis