Issue replicating "Error Code 3034: If you have been invited, please input your work email address."

Description
I’m trying to replicate an error by doing a POST to /webinars/{webinarId}/registrants. The error in question is: Error Code: 3034 - If you have been invited, please input your work email address.

Error
My issue is that I cannot replicate the error. I sent an empty POST body without the required email and first name and it was still added as a registrant. I thought the error would appear if no email was sent in the body.

Which App Type (OAuth / Chatbot / JWT / Webhook)?
OAuth but sending Test Requests from the Zoom Documentation page.

Which Endpoint/s?
POST to /webinars/{webinarId}/registrants

Hey @jimmy.huang,

Strange, I have not seen that error before. You are not able to reproduce it?

Let us know if you see this again.

Thanks,
Tommy