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Frequent Visitor

Flow to copy, Amend or Delete calendar entries in O365

I am looking for a method of monitoring a web based calendar (from a 3rd party) for changes and replicating these in my primary O365 calendar.  


I have built the flow that appears to be most logical but it fails, The sync time between O365 and the external calendar is Aprox 3 hours which means testing is somewhat disjointed (Can this be reduced at all?), so we have moved to testing using the inbuilt "Birthdays Calendar" in O365 for speed and to rule out the issue being with permissions relating to the web calendar, but get the same failure;


Your request can't be completed. Read-only calendars can't be modified.
clientRequestId: 9e48e898-5135-4e9e-bb0f-cbd0b7ce7d29
serviceRequestId: 17a371e4-5c9a-443c-a25b-b1db0619678b


The flow I have set up is;

When an event is added, updated or deleted (V3)

 Caledar id is Birthdays (Selected from the drop down)


Update event (V4)

All options are selected from the drop down or the dynamic content selection toolbox

Calendar id - Calendar (drop down)

id - id (dynamic content)

Subject - Subject (dynamic content)

Start - Start time (dynamic content)

End - End time (dynamic content)

Time Zone - UTC+00.00 (drop down)


If I create the same with a "create" entry output it works fine but id outputs of  "Modify" or "delete" are used on their own or as part of the Update Event output I get the same error.


Can anyone please assist with this?  I am new to power flow and would like to get this working as it is holding up a larger project we are trying to deploy.


Many thanks in advance


Frequent Visitor


Good afternoon, I would be delighted if you could spare a few moments to help a newbie overcome total confusion with the issue experienced.


I am using power apps in


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