What are three prerequisites for deploying an NSX Edge cluster in a VMware Cloud Foundation...

The NSX host overlay VLAN and NSX Edge overlay VLAN must be routed to each other so Edge nodes can establish overlay tunnels with transport nodes.

DNS A records for each NSX Edge node are required for name resolution during deployment and operation.

NSX requires distinct VLAN IDs and subnets for the host overlay network (transport nodes) and the Edge overlay network to segregate traffic and avoid IP space conflicts.

https://techdocs.broadcom.com/us/en/vmware-cis/vcf/vcf-5-2-and-earlier/5-2/map-for-administering-vcf-5-2/deploying-nsx-edge-clusters-admin/prerequisites-for-an-nsx-edge-cluster-admin.html