# Facebook Conversion API \<\> Zapier: Event De-Duplication

**URL:** <https://community.hubspot.com/t/facebook-conversion-api-zapier-event-de-duplication/75614>\
**Category:** Ads\
**Tags:** ads\
**Created:** [February 21, 2023, 8:29am UTC](https://community.hubspot.com/t/facebook-conversion-api-zapier-event-de-duplication/75614 "2023-02-21T08:29:58Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![WAD\_Christoph](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/wad_christoph/32/34870_2.png) [@WAD\_Christoph](https://community.hubspot.com/u/WAD_Christoph)\
**Post date:** [February 21, 2023, 8:29am UTC](https://community.hubspot.com/t/facebook-conversion-api-zapier-event-de-duplication/75614/1 "2023-02-21T08:29:58Z")

</div>

Hey and thanks for checking this post.

We want to set up both the server as well as the browser side event.

For the browser we use Google Tag Manager with Facebook Pixel Lead Event.

For the server we use Zapier to also send a Lead Event.

No we want to de-duplicate those events.

The issue we are facing is that we need to pass along the same event ID for the server & browser side tracking.

How can we make this happen?

Update: Tried to use Google Tag Manager to push an event ID to Hubspot. However, when triggered, the contact does not get the event ID attached. I contacted the Hubspot support but was told that they can not help me wiht making the script work.

```lia-code-sample
<script>
_hsq.push(["identify",{
 email: getParameterByName({{DLV - hs-form-email}}),
}]);

_hsq.push(["trackCustomBehavioralEvent", {
 name: "event_id",
 properties: {
 event_id: {{Event ID}}
 }
}]);
</script>

```

---

<div class="post-metadata">

**Author:** ![DianaGomez](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/dianagomez/32/48035_2.png) [@DianaGomez](https://community.hubspot.com/u/DianaGomez)\
**Post date:** [February 21, 2023, 9:50pm UTC](https://community.hubspot.com/t/facebook-conversion-api-zapier-event-de-duplication/75614/2 "2023-02-21T21:50:28Z")

</div>

Hi [@WAD\_Christoph](https://community.hubspot.com/t5/user/viewprofilepage/user-id/122051),

Thank you for reaching out to the Community!

I wanted to tag in a couple of subject matter experts to see if they have any input on this matter:

Hi @ChrisoKlepke,[@Mike\_Eastwood](https://community.hubspot.com/t5/user/viewprofilepage/user-id/9259), [@Olivia\_Bagnall](https://community.hubspot.com/t5/user/viewprofilepage/user-id/359008)do you have any advice for [@WAD\_Christoph](https://community.hubspot.com/t5/user/viewprofilepage/user-id/122051) ? Thanks!

Best,

Diana