Verify that the entire replication system is working when you are about to create replication definitions or subscriptions or when you are performing diagnostics on your system.
If you encounter errors, verifying your system allows you to rule out the possibility that threads or components are not running, or that routes and connections are not properly set up.
To make sure that Replication Server threads are running, you can execute admin who_is_down, which displays only threads that are not running. Alternatively, execute admin who to display information about all threads.