VMware Cloud Foundation 5.2
VMware Cloud Foundation 5.2.1
A known issue, in SDDC Manager, the default upgrade policy applies to all clusters, while in vSphere each cluster has a distinct upgrade policy. This can create a scenario where the ESX upgrade policy configured in vCenter does not match what SDDC Manager expects.
VCF 5.2.1 release notes
This issue causes a warning only. You can proceed with the upgrade without remediating the issue.