Flow setup to block events in second calendar, but creates multiple duplicates

Hello! I have multiple calendars that cannot communicate with each other. In order to help minimize doublebooking of events, I have a flow setup to:

  1. Search for new events with a certain name on Calendar A
  2. Create a duplicate event to block the time on Calendar B
    My current issue is that Step 2 continues to create more duplicate events even when there is already an event created to block the time on Calendar B. So my calendar ends up looking like the image below and eating through my available Make operations.
    Screenshot 2025-03-19 at 12.15.44 PM

Can anyone tell me how you would set it up to prevent continued duplication of events when one has been created?

Here is an image of my current scenario setup:

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Ok, here are screenshots and files:





scenario-1649637-logs.csv (244.5 KB)

Welcome to the Make community!

To prevent duplicates, you’ll need to see if a similar event already exists on the second calendar.

To do this, you can try using the Google Calendar “Search Events” module —

Searches for events on the specified calendar.

For more information, see https://www.make.com/en/integrations/google-calendar, and https://www.make.com/en/help/app/google-calendar in the help centre.

Hope this helps! Let me know if there are any further questions or issues.

@samliew

P.S.: Investing some effort into the Make Academy will save you lots of time and frustration using Make.

Hi @Jessica_Burdett
Alternatively, if you just want to avoid create another event if there’s one already in place, you can use getBusy and filter on the Busy array length.
Good luck,
pn