Outllok Calendar - delete multiple recurring instances at once

Question

Is there any way to delete multiple recurring instances at once? I want to delete, for example, 20 from 100 occurrences, but I don't see this option in the API.

Do I have to go through all the ids and delete them one by one?

I'm using the endpoint below, but it lets you delete only one occurrence, so in case you want to delete 20, I need to send 20 requests. Also, if I listen to changes, I receive 20 events from Microsoft.

DELETE https://graph.microsoft.com/v1.0/me/events/{id}
https://learn.microsoft.com/en-us/graph/api/event-delete?view=graph-rest-1.0&tabs=http

Thanks for help

Answer 1

Hi @Maciej

You can use JSON batching to delete multiple recurring instances at once, and you only need to send one API call.

POST https://graph.microsoft.com/v1.0/$batch  
Accept: application/json  
Content-Type: application/json  
  
{  
    "requests": [  
        {  
            "id": "1",  
            "method": "DELETE",  
            "url": "/me/events/{id}"  
        },  
        {  
            "id": "2",  
            "method": "DELETE",  
            "url": "/me/events/{id}"  
        },  
       ......  
    {  
      "id": "20",  
      "method": "DELETE",  
      "url": "/me/events/{id}"  
    }  
    ]  
}  

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Answer 2

Hi @Maciej ,

Hope you're doing well.

Currently, there is no Graph API to delete multiple recurring instances at once. You need to delete each event by using the event Instance ID in below endpoint.

 DELETE https://graph.microsoft.com/v1.0/me/events/{id}  

Refer List Instances to get all instances of a recurring event.

Since this feature is not yet supported, I would request you to raise a feature request using this feedback portal.

Hope this helps.

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