# Some \`webinar.registration\_created\` webhook events not sent

**URL:** <https://devforum.zoom.us/t/some-webinar-registration-created-webhook-events-not-sent/8909>\
**Category:** API and Webhooks\
**Created:** [March 18, 2020, 2:54pm UTC](https://devforum.zoom.us/t/some-webinar-registration-created-webhook-events-not-sent/8909 "2020-03-18T14:54:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hsintegration](https://avatars.discourse-cdn.com/v4/letter/h/54ee81/32.png) [@hsintegration](https://devforum.zoom.us/u/hsintegration)\
**Post date:** [March 18, 2020, 2:54pm UTC](https://devforum.zoom.us/t/some-webinar-registration-created-webhook-events-not-sent/8909/1 "2020-03-18T14:54:30Z")

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OAuth app.

The app is subscribed for `webinar.registration_created` and `webinar.ended` notifications. 3 registrants were added to webinar, then webinar started\ended. But only 2 `webinar.registration_created` events received - for the first 2 registrants, no event for the 3rd one. And later on `webinar.ended` event came. It looks like the registration event for 3rd user just got skipped.

Could this caused by Degraded Webhook Performance or has a different reason?

Let me know if additional info is required for investigation.

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [March 18, 2020, 10:25pm UTC](https://devforum.zoom.us/t/some-webinar-registration-created-webhook-events-not-sent/8909/2 "2020-03-18T22:25:28Z")

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Hey @hsintegration,

This is most likely related to the Degraded Webhook Performance, unless you are not sending a [200 OK response](https://marketplace.zoom.us/docs/api-reference/webhook-reference#notification-delivery) back.

Let us know if you continue to experience the issue.

Thanks,  
Tommy

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**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\
**Post date:** [August 21, 2020, 7:33pm UTC](https://devforum.zoom.us/t/some-webinar-registration-created-webhook-events-not-sent/8909/3 "2020-08-21T19:33:32Z")

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Closed on August 21, 2020, 7:33pm UTC