VMware vSAN Snapshot manager UI Plugin not registered in vCenter

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VMware vCenter Server

After successfully deploying Snapshot Service Appliance, VMware vSAN Snapshot manager UI Plugin is not registered in vCenter
In Snapshot Service Appliance log file /var/log/firstboot, you can see lines similar to :

The DNS in VC certificate is: VCSA_FQDN, DNS

The DNS in VC certificate is not same with VC input address, maybe the VC input address is IP address

VC input address is invalid IPv4/v6 address or not the same with the DNS in VC certificate

Inspecting vCenter MACHINE_SSL certificate "Subject Alternative Name" property, you can see

/usr/lib/vmware-vmafd/bin/vecs-cli entry list --store MACHINE_SSL_CERT --text | grep -A1 Alternative

X509v3 Subject Alternative Name:
DNS:VCSA_FQDN, DNS:VCSA_HOSTNAME, DNS:OTHER_FQDN

This issue occurs due to the presence of multiple DNS names in the vCenter certificate.

Currently there is no resolution. Engineering team is working to fix this issue in the future release
As a workaround, you can apply the following procedure
- Backup vCenter Server : VMware vCenter in Enhanced Linked Mode pre-changes snapshot (online or offline) best practice
- replace vCenter Server MACHINE_SSL with "Subject Alternative Name" equal to "DNS:VCSA_FQDN" Managing Certificates Using the vSphere Client
- Redeploy VMware Snapshot Service Appliance : Deploying the Snapshot Service Appliance
If you are still facing issues after following the workaround, kindly raise a ticket with the Broadcom support

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