# Webhook sends same event twise

**URL:** <https://devforum.zoom.us/t/webhook-sends-same-event-twise/30396>\
**Category:** API and Webhooks\
**Created:** [September 16, 2020, 7:49am UTC](https://devforum.zoom.us/t/webhook-sends-same-event-twise/30396 "2020-09-16T07:49:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![s.kozlov9242](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/s.kozlov9242/32/6511_2.png) [@s.kozlov9242](https://devforum.zoom.us/u/s.kozlov9242)\
**Post date:** [September 16, 2020, 7:49am UTC](https://devforum.zoom.us/t/webhook-sends-same-event-twise/30396/1 "2020-09-16T07:49:03Z")

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**Description**  
Zoom sent same events twice in a very short period

event type `recording.completed`

[https://app-dev.bitzoom.ru/zoom/auth/zoomevents/recordings](https://app-dev.bitzoom.ru/zoom/auth/zoomevents/recordings)

```
16-09-2020 13:33:52 +06 X-Zm-Trackingid=Webhook_67c1fe214f854dc0a5555f1e94302f85 
16-09-2020 13:33:52 +06 X-Zm-Trackingid=Webhook_67c1fe214f854dc0a5555f1e94302f85 

```

May I use header `X-Zm-Trackingid` as an operation id to make processing idempotent?

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<div class="post-metadata">

**Author:** ![will.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/will.zoom/32/14417_2.png) [@will.zoom](https://devforum.zoom.us/u/will.zoom)\
**Post date:** [September 17, 2020, 6:29pm UTC](https://devforum.zoom.us/t/webhook-sends-same-event-twise/30396/2 "2020-09-17T18:29:18Z")

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Hey @s.kozlov9242,

Thanks for sharing this, our team is looking into this for you (ZOOM-197808).

In regards to the Trackingid, this is unique and could be used to identify duplicate requests. I’ll get back to you once I have an update on as to why this might have occurred.

Thanks!  
Will

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [October 18, 2020, 4:29am UTC](https://devforum.zoom.us/t/webhook-sends-same-event-twise/30396/3 "2020-10-18T04:29:18Z")

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