# "User does not exist" error while trying to add registrant to a webinar

**URL:** <https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872>\
**Category:** API and Webhooks\
**Tags:** webinar\
**Created:** [June 6, 2021, 11:49pm UTC](https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872 "2021-06-06T23:49:26Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![cadeci](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/cadeci/32/27728_2.png) [@cadeci](https://devforum.zoom.us/u/cadeci)\
**Post date:** [June 6, 2021, 11:49pm UTC](https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872/1 "2021-06-06T23:49:26Z")

</div>

**Description**  
I’m trying to add a registrant to a webinar

URL:  
[https://api.zoom.us/v2/webinars//registrants](https://api.zoom.us/v2/webinars//registrants)

Method: POST

**Error**  
{  
“code”: 1001,  
“message”: “User does not exist: .”  
}

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

**Which Endpoint/s?**  
/v2/webinars//registrants

**How To Reproduce (If applicable)**  
1.- URL (POST):  
**/v2/webinars//registrants**  
2.- BODY/PAYLOAD:

```auto
{
  "email": ,
  "first_name": "",
  "last_name": ""
}

```

3.- ERROR:

```auto
{
    "code": 1001,
    "message": "User does not exist: ."
}

```

**Screenshots (If applicable)**

 ![Screen Shot 2021-06-06 at 18.35.37](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/9/7/972386169f18e826e4702d793674b8875dbe3f81.png)

**Additional context**  
I created this webinar with an account that is not the main account, I think that is related with the issue  
The main account has the email: \*\*\*\*  
The account that was used to create this webinar is: \*\*\*\*

Something weird is that even if I use the email: \*\*\*\*  
When I call this endpoint: **/v2/users/me**  
I see \*\*\*\* in the response

Other detail that could be relevant is that I’m able to use other endpoints, for example get the registrants without any issue  
URL (GET):  
/v2/webinars//registrants

---

<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:** [June 7, 2021, 8:19pm UTC](https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872/2 "2021-06-07T20:19:24Z")

</div>

Hey @cadeci,

Do you have [authentication profiles](https://support.zoom.us/hc/en-us/articles/360037117472-Authentication-Profiles-for-meetings-and-webinars) enabled for this meeting?

If you do, can you try disabling it and see if it works?

Let me know, thanks!  
Will

---

<div class="post-metadata">

**Author:** ![cadeci](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/cadeci/32/27728_2.png) [@cadeci](https://devforum.zoom.us/u/cadeci)\
**Post date:** [June 8, 2021, 11:08pm UTC](https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872/3 "2021-06-08T23:08:19Z")

</div>

Yes, that was causing the error  
I just changed the option so users don’t need to sign in to Zoom to join de webinar and now the endpoint is working fine

Great!  
Thank you

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<div class="post-metadata">

**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\
**Post date:** [June 9, 2021, 6:37pm UTC](https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872/4 "2021-06-09T18:37:42Z")

</div>

Hey @cadeci,

I’m glad to hear that Will was able to help! I’ll go ahead and close this topic now but feel free to open a new topic if you encounter any further issues or questions.

Thanks,  
Max

---

<div class="post-metadata">

**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\
**Post date:** [June 9, 2021, 6:37pm UTC](https://devforum.zoom.us/t/user-does-not-exist-error-while-trying-to-add-registrant-to-a-webinar/51872/5 "2021-06-09T18:37:48Z")

</div>

Closed on June 9, 2021, 6:37pm UTC