# Webinar create registrant error - "code":300,"message":"The parameter is required: address."

**URL:** <https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813>\
**Category:** API and Webhooks\
**Tags:** webinar\
**Created:** [October 24, 2022, 2:01pm UTC](https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813 "2022-10-24T14:01:52Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![sujithliyanage86](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/sujithliyanage86/32/42463_2.png) [@sujithliyanage86](https://devforum.zoom.us/u/sujithliyanage86)\
**Post date:** [October 24, 2022, 2:01pm UTC](https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813/1 "2022-10-24T14:01:52Z")

</div>

Hi Zoom,

I am getting “code”:300,“message”:“The parameter is required: address.” today for the API - [Zoom Meeting API](https://marketplace.zoom.us/docs/api-reference/zoom-api/methods/#operation/webinarRegistrantCreate)

In the API doc it shows as optional. Please fix this soon.

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<div class="post-metadata">

**Author:** ![donte.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/donte.zoom/32/24412_2.png) [@donte.zoom](https://devforum.zoom.us/u/donte.zoom)\
**Post date:** [October 25, 2022, 2:30am UTC](https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813/2 "2022-10-25T02:30:09Z")

</div>

Greetings,

Welcome to the Developer Forum, @sujithliyanage86 — happy to help here ! As a first step, can you share more details about the issue you are facing? Please clarify which endpoint you are using and share a snippet of code that is causing the problem. We are happy to help troubleshoot and advise on the best path forward to accomplish your goal.

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<div class="post-metadata">

**Author:** ![sujithliyanage86](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/sujithliyanage86/32/42463_2.png) [@sujithliyanage86](https://devforum.zoom.us/u/sujithliyanage86)\
**Post date:** [October 25, 2022, 4:28am UTC](https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813/3 "2022-10-25T04:28:00Z")

</div>

Hi,  
Below is the full trace of the request and response.

```auto
2022-10-24 18:55:55,483 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "POST /v2/webinars/81234002952/registrants HTTP/1.1[\r][\n]"
2022-10-24 18:55:55,483 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Accept: application/json, application/*+json[\r][\n]"
2022-10-24 18:55:55,483 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Authorization: Bearer [REDACTED].<more>[\r][\n]"
2022-10-24 18:55:55,484 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Content-Type: application/json[\r][\n]"
2022-10-24 18:55:55,484 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Content-Length: 102[\r][\n]"
2022-10-24 18:55:55,484 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Host: api.zoom.us[\r][\n]"
2022-10-24 18:55:55,485 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Connection: Keep-Alive[\r][\n]"
2022-10-24 18:55:55,485 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "User-Agent: Apache-HttpClient/4.4.1 (Java/1.8.0_282)[\r][\n]"
2022-10-24 18:55:55,485 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Cookie: TS018dd1ba=01377c1b73db9e7700e58500fa44c328b8628ca3a<more>[\r][\n]"
2022-10-24 18:55:55,486 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "Accept-Encoding: gzip,deflate[\r][\n]"
2022-10-24 18:55:55,486 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 >> "[\r][\n]"
2022-10-24 18:55:55,486 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:86] http-outgoing-852 >> "{"email":"[REDACTED]","first_name":"VD-01109-rashan0029","last_name":"student"}"

2022-10-24 18:55:55,752 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "HTTP/1.1 400 Bad Request[\r][\n]"
2022-10-24 18:55:55,753 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "Date: Mon, 24 Oct 2022 13:25:55 GMT[\r][\n]"
2022-10-24 18:55:55,753 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "Content-Type: application/json;charset=UTF-8[\r][\n]"
2022-10-24 18:55:55,753 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "Content-Length: 60[\r][\n]"
2022-10-24 18:55:55,754 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "Connection: keep-alive[\r][\n]"
2022-10-24 18:55:55,754 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "x-zm-trackingid: v=2.0;clid=us02;rid=WEB_80a91bd0f7b0185fbe04abd45de8c4b8[\r][\n]"
2022-10-24 18:55:55,754 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "x-content-type-options: nosniff[\r][\n]"
2022-10-24 18:55:55,754 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "Cache-Control: no-cache, no-store, must-revalidate, no-transform[\r][\n]"
2022-10-24 18:55:55,755 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "pragma: no-cache[\r][\n]"
2022-10-24 18:55:55,755 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "expires: Thu, 01 Jan 1970 00:00:00 GMT[\r][\n]"
2022-10-24 18:55:55,755 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: zm_aid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,756 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: zm_haid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,756 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: zm_tmaid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,756 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: zm_htmaid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,757 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: cred=4AE67A0D44DD3B711D177228AEF2D9A1; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,757 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: _zm_ctaid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,757 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: _zm_chtaid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,758 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: _zm_ctaid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,758 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: _zm_chtaid=""; Domain=.zoom.us; Expires=Thu, 01-Jan-1970 00:00:10 GMT; Path=/; Secure; HttpOnly[\r][\n]"
2022-10-24 18:55:55,758 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: TS01f92dc5=016e61231e1424d0dda488e4d9892fff78f27b8d478a003aa585fd57ba158fb8a743cc346d1ffa438c0fc679b602331323e36582db; Path=/; Secure; HttpOnly; SameSite=Strict;[\r][\n]"
2022-10-24 18:55:55,759 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "set-cookie: TS018dd1ba=016e61231e1424d0dda488e4d9892fff78f27b8d478a003aa585fd57ba158fb8a743cc346d1ffa438c0fc679b602331323e36582db; path=/; domain=.zoom.us[\r][\n]"
2022-10-24 18:55:55,759 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "vary: Origin[\r][\n]"
2022-10-24 18:55:55,759 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "vary: Access-Control-Request-Method[\r][\n]"
2022-10-24 18:55:55,759 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "vary: Access-Control-Request-Headers[\r][\n]"
2022-10-24 18:55:55,760 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "x-ratelimit-category: Light[\r][\n]"
2022-10-24 18:55:55,760 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "x-zm-zoneid: VA[\r][\n]"
2022-10-24 18:55:55,760 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "x-ratelimit-limit: 3[\r][\n]"
2022-10-24 18:55:55,761 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "x-ratelimit-remaining: 2[\r][\n]"
2022-10-24 18:55:55,761 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "CF-Cache-Status: DYNAMIC[\r][\n]"
2022-10-24 18:55:55,761 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "Server: cloudflare[\r][\n]"
2022-10-24 18:55:55,762 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "CF-RAY: 75f30a8e88b2c198-IAD[\r][\n]"
2022-10-24 18:55:55,762 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400[\r][\n]"
2022-10-24 18:55:55,762 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:72] http-outgoing-852 << "[\r][\n]"
2022-10-24 18:55:55,763 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:86] http-outgoing-852 << "{"code":300,"message":"The parameter is required: address."}"

```

This was working fine for nearly 2 years and yesterday I saw this error for the first time.

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<div class="post-metadata">

**Author:** ![donte.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/donte.zoom/32/24412_2.png) [@donte.zoom](https://devforum.zoom.us/u/donte.zoom)\
**Post date:** [October 25, 2022, 12:52pm UTC](https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813/4 "2022-10-25T12:52:44Z")

</div>

@sujithliyanage86 ,

Thanks for sharing the logs! It looks like there is a missing parameter value. Have you tried to add the **address** to see if that resolves the behavior you are seeing :

> [@sujithliyanage86](#):
>
> `2022-10-24 18:55:55,763 DEBUG [http-nio-8080-exec-101][org.apache.http.impl.conn.Wire:86] http-outgoing-852 << "{"code":300,"message":"The parameter is required: address."}"`

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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 29, 2023, 4:29am UTC](https://devforum.zoom.us/t/webinar-create-registrant-error-code-300-message-the-parameter-is-required-address/77813/5 "2023-10-29T04:29:36Z")

</div>

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