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

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@cdsuk40 ,

Whoops—it looks like you may have posted the same question twice. I will go ahead and close this thread, and continue providing support in the post below. Please keep your question to one post to avoid it being overlooked or flagged as spam.