I've been trying to get an instant sync set up between zoho crm and zoho billing to sync my contacts. I've followed https://www.zoho.com/uk/billing/kb/integrations/instant-automatic-sync-from-crm-to-subscriptions.html#:~:text=Webhooks-,How%20do%20I%20sync%20new%20data%20from%20Zoho%20CRM%20to,Settings%20%3E%20Integrations%20%3E%20Zoho%20CRM.

but I'm getting an error from within the function in the workflow.

I have also set up the connection correctly, as seen in the docs I have linked

what am I doing wrong here?