Hey @demian.sh 

Yes, it is possible to set a unique_id when using the Klaviyo site tracking script (klaviyo.track)

When using klaviyo.track to send events to Klaviyo, you can include a properties object where you define custom properties for the event. Within this properties object, you can set a unique_id to uniquely identify the event.

i hope this helps

Cheers

Arpit

Hello, @ArpitBanjara.
Thanks for you reply. Are you sure about `unique_id` property? I figured out that passing `$event_id` prevents duplications when I pass the same ID for multiple events.