Unable to create a module entry via Zapier

Unable to create a module entry via Zapier

I'm trying to connect Cal.com to the meetings module but keep getting this error:
Failed to create a module entry in Zoho CRM
Unable to create entry in module: Events. Error : required field not found. Detail : api_name type, index 1, parent_api_name Participants

I've included a screenshot of the Participants fields. Not sure what I am missing here.