I've also created a VMware SR for this and their response (which worked for me) is:

1) Log into vCenter server using thick Client/ vsphere client. Navigate to Alarm Settings *--> Health status changed alarm --> Edit Settings --> Triggers --> Change Status from unset to Warning.

2) In advanced options on the same page --> Select argument as data center name --> Operator as equal to --> Value is Data Center name.

3) Click on Actions Tab --> Select warning to alert and Warning to OK as once.

4) Restart the vCenter Server Services.