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Issue with Power Automate when creating an Event in a Dynamic Group Calendar

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Posted on by MS-03101913-0

I’m trying to create an event on a Dynamic Group Calendar with Power Automate and I’m getting an error about specified object was not found in store.

I got the Calendar ID from Graph and stored it in a String Variable in Power Automate.

I’ve added the variable as the Calendar ID in the Create Event (V4) step

but when I run it I get the following error:
{
  "status": 404,
  "message": "The specified object was not found in the store.\r\nclientRequestId: e5ab9d05-XXXX-46a8-be99-XXXXXXX\r\nserviceRequestId: 73bc11b4-XXXXX-40b1-8727-XXXXXXXX",
  "error": {
    "message": "The specified object was not found in the store.",
    "code": "ErrorItemNotFound",
    "originalMessage": "The specified object was not found in the store."
  },
  "source": "office365-eus.azconn-eus-003.p.azurewebsites.net"
}

The connection in the Create Event (V4) is connected to my account which has access to the calendar and access to create the event. I’ve tested manually and I can create the event in outlook.

Mike-

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Building flows

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Tomac 4,105 Moderator on at

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Is there a reason you're using a dynamic calendar ID instead of using the drop-down box to select one?

Also, Power Automate requires Full Permissions and Send As permissions in order to work with a shared mailbox, being an owner is not enough. So while you can create an event in Outlook as an owner, Power Automate still won't play ball. Be sure your permissions are set correctly for working with PA.

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stampcoin 5,158 Super User 2026 Season 1 on at

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@MS-03101913-0 Hi,

Create event (V4) action expects an user calendar not group calendar.

When you use this action, it's like invoke /me/calendars, but your calendar doesn't have it.

You can switch connectors to Office 365 Groups Create a group event (V2).

You can get the group id from graph, or use List groups to get the group id

see below screen shot.

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