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Power Automate - Building Flows
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Automatic Accept and Decline Meeting Changes

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Posted on by 228

I am working on a large approval workflow that needs to publish documents after a meeting has been held. This can take 2 months from an initial approval stage to when a meeting is scheduled. Since Power Automate flows have a 28 day flow run limit, I need to now breakup a workflow that I already have built and works fine if the meeting happens within the 28 day limit. This longer time is a new requirement from something we have been for 3 years.

 

Since I need a child flow to be triggered that will schedule the meeting and then watch the invite for any rescheduling, I can't use the users credentials anymore in the triggering workflow to create and track the meeting in their calendar. My thought is to create a Service Account with a Mailbox that all meetings will be scheduled with and the invite sent to the required parties for the meeting. I am using Find Time to get availability and then Teams to schedule the meeting. I then have a loop that checks to see if the meeting time has passed. However, now that the invite is coming from the service account instead of the users provided credentials, I need a way to automatically accept meeting time changes if the attendees need to move the meeting. I tried turning the service account into a resource mailbox with automatic approvals enabled. However, this didn't accept meeting time changes since the service account is the organizer. I then tried changing it back to a user mailbox and then creating a workflow to watch the invites and automatically accept them but now I get the following error message in the workflow: 

 

"Your request can't be completed. You can't respond to this meeting because you're the meeting organizer."

 

Any ideas on how I could make this work So I can track the meetings in one account?

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  • NickTT Profile Picture
    228 on at
    Re: Automatic Accept and Decline Meeting Changes

    I figured out a way to do this leveraging the GraphAPI directly and an application password\secret. I then gave that App Rights to Read.Write to all calendars.

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