For Terraform Cloudflare provider, there needs to be an account ID argument/parameter for the cloudflare_zone resource to be able to specify which Cloudflare account the zone should be created in.
Terraform Document (No account ID parameter): https://registry.terraform.io/providers/cloudflare/cloudflare/latest/docs/resources/zone
Cloudflare API Document (Account ID parameter is present): https://api.cloudflare.com/#zone-create-zone
