Question About Updating Registrant Name and join_url Behavior

API and Webhooks Meetings
1

Hello Zoom API Support Team,

I am currently using the Zoom API to manage meeting registrants, and I have a question regarding registrant updates.

I understand that there is no official API to update an existing registrant’s name (first_name, last_name). However, I have observed that when I send a POST request to create a registrant using the same email address, the name appears to be updated.

In this situation, I would like to clarify the following:

  1. When a registrant is created again using the same email address, is the existing registrant updated internally, or is a new registrant created?

  2. In this process, is the join_url guaranteed to remain the same, or can it change?

  3. Are there any official best practices recommended by Zoom for updating registrant information such as name?

This behavior is critical for maintaining consistency in our system, so I would appreciate your clarification.

Thank you for your support.

Best regards,
[Dooseok]

2

@dooseok ,

Thank you for posting in the Zoom Developer Forum. Are you able to share a video of the behavior you described? It would also help to know whether you are sending the POST request for the same meeting each time, or for different meetings when you see these changes.

3

Hello,

Thank you for your response.

I sent the POST request to the same meeting.

The request body included email, first_name, and last_name.

When I sent the request this way, only the name was updated, and the join_url did not change. However, I am not sure whether the registrant_id was changed or not.

Please let me know if you need any additional information.

Thank you.

4

Thank you for the details, @dooseok ! Are you able to share a video reproducing the behavior ? And can you share the response with PPI redacted ?