Registrant id doesn't always match with webhook events "participant joined" and "participant left"

[s.kozlov9242 (Sergey)]

Description
Registered participant id doesn’t match with id in webhook events

participant registration
/v2/meetings/87559624411/registrants
Payload
{"email":"someemail@gmail.com","first_name":"Aaron","last_name":"Kahn"}
Response
{"id":87559624411,"join_url":"https://us02web.zoom.us/w/87559624411?tk=f9f_50FR54jgOdCgPOWVv5NVG38JKAh2m6bwPwcqaVc.DQIAAAAUYvXW2xZ0VVVvWWI2c1RicVdMUHFGMkxDSkZRAAAAAAAAAAAAAAAAAAAAAAAAAAAA\u0026pwd=L0dXajlkNDVaclhLYThXNklKWitEZz09","registrant_id":"tUUoYb6sTbqWLPqF2LCJFQ"}

The participant joined event payload

{"account_id":"2E2AAyC9QR-q9e5UrwhEqA","object":{"duration":60,"host_id":"QLmej305SWu_Q1gg6nb14g","id":"87559624411","participant":{"id":"","join_time":"2020-09-24T06:20:54Z","user_id":"100665344","user_name":"Aaron Kahn"},"start_time":"2020-09-24T06:12:02Z","timezone":"Asia/Almaty","topic":"My Meeting","type":2,"uuid":"W0BiP7UERK2cEOfKXvyymg=="}}

The participant left event payload

{"account_id":"2E2AAyC9QR-q9e5UrwhEqA","object":{"duration":60,"host_id":"QLmej305SWu_Q1gg6nb14g","id":"87559624411","participant":{"id":"tUUoYb6sTbqWLPqF2LCJFQ","leave_time":"2020-09-24T06:21:09Z","user_id":"100665344","user_name":"Aaron Kahn"},"start_time":"2020-09-24T06:12:02Z","timezone":"Asia/Almaty","topic":"My Meeting","type":2,"uuid":"W0BiP7UERK2cEOfKXvyymg=="}}

Error
As you see participant id was set only for the second event while user_id was set and same in both events.

Which App Type (OAuth / Chatbot / JWT / Webhook)?
Oauth

Which Endpoint/s?

Add Meeting Registrant - Meetings - Zoom API - API Reference

[DeveloperBot]

Hey @s.kozlov9242

Thanks for posting on the Zoom Devforum! I am still learning, but I will try my best to help answer your question.

Checkout these related threads that may have the answer you are looking for:

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Empty id in report participants api

When I query for participant data using report participants api, I see for some users id is empty("") https://api.zoom.us/v2/report/meetings/708711125/participants?page_size=300 I wanted to map registered participants with their attentiveness. but since id is empty(""), I will be missing out some data. Can someone help me in this regard? Thank you

Not able to get participants list after ending the meeting

Hi team, I am not able to get the participants lists after ending the meeting. If there is only one participant at a time. API: report/meetings/{meetingId}/participants However if there are two unique participants then the API returns the result. Is there any way through API to get the list of participants even if there is only one participant.

If these threads did not help, please let us know by replying back here and someone from the Developer Relations team will get back to you shortly.

Thanks,
DeveloperBot

[s.kozlov9242 (Sergey)]

Unfortunately suggestion is useless. Please summon human to help me

[will.zoom (Will)]

Hey @s.kozlov9242,

Can you confirm that you have registration required for the meeting(s) where you’re comparing these IDs? If registration is not required, these IDs will not necessarily be the same:

Additionally, can you confirm the user(s) were logged into Zoom when they joined the meeting(s) in question? If they were not authenticated when they joined, these IDs will not necessarily be the same.

Let me know—thanks!
Will

[s.kozlov9242 (Sergey)]

Hi Will,

The user wasn’t logged into Zoom. I understand that id shouldn’t be the same. But I can’t receive the ID on participant joined event that’s confusing.

[will.zoom (Will)]

Hey @s.kozlov9242,

Thanks for clarifying.

This is an experience that we’re working on improving—you might find this thread helpful for some context:

Unable to map meeting registrant id with live participant id

Hey @FutureX, Thanks for sharing, yes this is the case we are working on improving. Right now the constant is the email they register with, it will pass through to the Get participants APIs: -Tommy

Let me know if you have further questions in the meantime.

Best,
Will