You can only pair protected and recovery sites that have the same Site Recovery Manager extension ID.
To install
Site Recovery Manager in a shared recovery site configuration, you deploy
Site Recovery Manager Server on one or more protected sites, and deploy a corresponding number of
Site Recovery Manager Server instances on the shared recovery site.
What to read next
Procedure
Use vSphere Replication in a Shared Recovery Site Configuration vSphere Replication with Site Recovery Manager in a shared recovery site configuration in the same way that you do in a standard configuration. Configure the Site Recovery Manager Appliance on Multiple Protected Sites to Use with a Shared Recovery Site Site Recovery Manager Appliance on each protected site to use with a shared recovery site.Configure Multiple Site Recovery Manager Server Instances on a Shared Recovery Site Site Recovery Manager Server instances that all extend the same vCenter Server instance on the shared recovery site. Connect the Site Recovery Manager Sites in a Shared Recovery Site Configuration Site Recovery Manager sites in the same way as for a standard one-to-one configuration. Use Array-Based Replication in a Shared Recovery Site Configuration Site Recovery Manager in a shared recovery site configuration in the same way as you do in a standard configuration. Configure Placeholders and Mappings in a Shared Recovery Site Configuration
