Format_Invalid when importing csv file of attendees in zoom webinar

[TerryChiplin]

Hi all

I have hosted webinars using the zoom platform for a couple of years with no issues.
This week I hosted the first session of 2024 - I am on the Pro profile.
When I attempted to import attendee emails and names into zoom, I received an error message saying format_invalid, described as rows. I am using the template that zoom supply for importing attendees.
I have tried creating and saving the csv file in both numbers (Mac) and Excel with the same result.

I am using a Macbook Air. Not sure of zoom version but believe it is up to date.
If it makes a difference, I now live in France having recently moved from the UK.
I have sent 2 tickets into zoom support without an answer. The last one was TS0536661.
I tried sending myself a test confirmation email, and then used that content to send out an email to all the attendees.
Some attendees were able to access the live webinar as a result, and many were not - they were asked by zoom to register, and then received a message saying their registration was pending.
Any suggestions for a resolution would be warmly welcomed.

[Frank_TB]

Hello,

With Zoom Webinars registration, registrants can be imported by CSV upload and automatically approved. Once they have successfully been imported, a confirmation email will be sent to the registrants. 

Reasons you may have an issue;

• The CSV file can only be up to 2MB.
• Can only upload registrants to single-occurrence(non-recurring) webinars.
• If charging a registration fee through Paypal is enabled for the webinar, this option will not be available.
• If your registration has additional required questions, imported registrants will be redirected to the registration page to complete the missing required questions. 
• Bad formatting

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0065473 

Is your webinar a single occurrence or a recurring series ?

Regards

If my reply helped, don't forget to click the accept as solution button!

[TerryChiplin]

Hi Frank, and thanks for your reply.
Here are my answers to the points you noted:

• The csv file is 4 kb
• It is a single occurrence webinar
• No registration fees have been charged through PayPal or any other platform
• I didn't use the registration process on zoom - i used a separate platform for registration and then exported the data into a csv file that I then attempted to upload to zoom
• I wondered about formatting - I have used the same process for the last 3 or 4 years without any previous issues. I also tried using the zoom template directly and that still came up with the same error message.
  I think it must be in this area, yet don't know exactly why it is happening?

Thank you, I do appreciate your thoughts.
Cheers

Terry

[ARPAEO]

Hi Terry, wondering if you had any luck solving this issue?

I have experienced the same problem when I held my first Zoom webinar last month.

My data is good - checked all the parameters against the Zoom knowledge article.

First upload of 200 names only 199 accepted - it appears that Zoom doesn't like row 1 but the template doesn't call for a header row.

My second upload of 25 names (to the same webinar) only 17 were accepted. I could find no reason why. One email may have been rejected due to a possible duplication, but all others were clean and unique.

If you have any thoughts to share I'd appreciate it.