The Fluid Topics Configuration Validator tool allows administrators to validate both multi-portal and legacy configurations. It performs the exact same validation as the portal does when opening a tenant in the errors that can be displayed in the 500 error page.
The command is available in the antidot-fluidtopics-conf-validator package, which is a dependency of antidot-fluidtopics-standalone and is installed in /usr/local/afs7/Fluid-Topics/conf-validator/. This command can be used to validate a single configuration file or an entire configuration directory.