Here is an example connection:
# Configure the VMware vCloud Director Provider provider "vcd" { user = "cloud1100000" password = "1234567" org = "Org_cloud1100000" vdc = "DC_1144457" url = "https://mycloud.mel.zettagrid.com/api" max_retry_timeout = "60" allow_unverified_ssl = "0" }
Ensure you use the correct URL for your zone.
Further information: