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[EWS] Setting ResponseType in calendar event RRS feed

  • Question

  • I am using XML/SOAP (not the managed API) to create calendar events in Office 365. For attendees, I need to set the status (accepted, declined, etc.).  In the other direction, I can read this property in ResponseType. From what I gather, this is read-only, and I cannot set it, even though when I do, I get no error from Exchange - it is just ignored:

    <t:Attendee>
    <t:Mailbox>
    <t:Name>John Smith</t:Name>
    <t:EmailAddress>john.smith@domain.com</t:EmailAddress>
    </t:Mailbox>
    <t:ResponseType>Accept</t:ResponseType>
    </t:Attendee>
    

    Am I correct that there is no way that I can set this property?  How about using extended MAPI properties?  When I tried using "ExtendedProperty" inside the Attendee, I got a schema violation.  Can you show me how I can do this?

    Thursday, December 18, 2014 7:57 PM