No resource pools available in the selected vCenter Server
VMware Cloud Director 10.x
The issue occurs when Cloud Director could not find the new resource pool in the vCenter.
To resolve the issue,
1. Reconnect and Refresh the vCenter instance in the Cloud Director portal.
2. Check if DRS is enabled in vCenter. DRS is a requirement for VCD.
For more information, see Reconnect a vCenter Server Instance.