Here you can find links to the Cloud Director DR and Migration API Guide and Reference and to the documentation for VMware Cloud Director Availability.
API Guide
VMware Cloud Director Availability 4.7 - Cloud Director DR and Migration API Guide
API Reference
VMware Cloud Director Availability 4.7 - Cloud Director DR and Migration API Reference
VMware Cloud Director Availability Documentation
https://docs.vmware.com/en/VMware-Cloud-Director-Availability/index.html