Why isn’t the invitee’s decline response shared with the sales application?

When an invitee shares a meeting with the sales application, Microsoft provides only the Microsoft ID (MS ID) and not the iCalUId of the meeting. So, looking up an invitee’s decline response isn’t possible because the iCalUId isn’t available. Also, the add-in doesn’t track the MS ID of all the invitees.

Note: The invitee response of the meeting shared with the sales application is read-only for the organizer. The organizer can’t change the response in the sales application.