OAuth add meeting registrant from outside the own account

[gymternet (Anusch)]

Dear Zoom support team,

Currently have an OAuth app awaiting approval.

When we try to add registrants to a meeting within our own account we manage to successfully do so. We are using the API: /docs/api-reference/zoom-api/meetings/meetingregistrantcreate
However when the app was tested by you guys the registration doesn’t work.
Even though the meeting is there and is not expired.

Could you please advise on what we are doing wrong?

Thank you in advance

Anusch

Error
This is the error message the Zoom Tester got:

https://api.zoom.us/v2/meetings/85104875493/registrants?occurrence_ids=1603404060000resulted in a404 Not Found` response:\n{“code”:3001,“message”:“Meeting 85104875493 is not found or has expired.”}\n"}{“message”:“Unable to register at meeting.”}

Which App Type (OAuth / Chatbot / JWT / Webhook)?
OAuth (user-managed app)

Which Endpoint/s?
v2/meetings/85104875493/registrants

How To Reproduce (If applicable)
Steps to reproduce the behavior:
zoom testers can only reproduce, since a published OAuth app is needed

[will.zoom (Will)]

Hey @gymternet,

Thanks for reaching out about this.

As a first step, can you confirm that the meeting instance you were attempting to add a registrant to hadn’t already passed? Do you run into this issue when you pass an upcoming meeting occurrence to the occurrence_ids parameter, or just past occurrences?

Thanks,
Will