SRM connectivity is broken.
SRM pairs report below error in the UI.
Unable to retrieve pairs from extension server at https://#.#.#.#:443/drserver/vcdr/vmomi/sdk.Unable to connect to Site Recovery Manager Server at https://#.#.#.#:443/drserver/vcdr/vmomi/sdk. Reason: java.net.ConnectException: Connection refused
VMware Site Recovery Manager 8.7
A restart of SRM server fixed the issue.
Steps to Restart SRM service is availiable at https://techdocs.broadcom.com/us/en/vmware-cis/live-recovery/site-recovery-manager/8-7/site-recovery-manager-installation-and-configuration-8-7/reconfiguring-the-site-recovery-manager-virtual-appliance/start-stop-and-restart-services.html link.