In a Service Desk Manager 17.0 Advanced Availability setup, attempting to install xFlow Analyst Interface on a brand new server gives an error "The current CA Service Desk Manager release version is not compatible with xFlow analyst interface. Select CA Service Desk Manager for installation"
The server where xFlow Analyst Interface is being installed, it was not defined in the list of Servers in the Service Desk Manager architecture.
1) Add the xFlow server's name into the Service Desk Manager servers list via Administration -> System -> Servers screen
2) Retry the install now.
For additional details on how to add a new server, see this docops link: https://docops.ca.com/ca-service-management/14-1/en/administering/configure-ca-service-desk-manager/managing-servers/how-to-configure-processes-for-ca-sdm-servers#HowtoConfigureProcessesforCASDMServers-CreateaServer