After you deploy the management domain, you must upgrade the VMware vCenter Server Appliance to the version that is supported with VMware Cloud Foundation 4.3.

During the VxRail first run, VxRail Manager 7.0.202 deploys vCenter Server 7.0 Update 2b (build 17958471). However, the VMware Cloud Foundation 4.3 BOM requires vCenter Server 7.0 Update 2c (build 18356314). Until you upgrade vCenter Server, you will not be able to deploy a VI workload domain.