@Robert FD the ticket has now moved to our public jira https://puppet.atlassian.net/browse/SERVER-3228 and I am unable to update it due to some transisition permissions issues but I did get the following response "The limit of 3 million codepoints is quite large and we find users who surpass that either have files that are unwieldy and should instead be integrated with a DB (eg hiera_vault), or are inserting large values that should instead be handled by a file resource. We recommend users do not surpass the limit instituted by SnakeYAML.. However, JRuby will support configuring SnakeYAML limits in 9.4. Because JRuby 9.4 implements Ruby 3.1 we will be shipping it in Puppet Platform 8/Puppet Server 8. If they backport the configuration to JRuby 9.3 then we will also take it up in Puppet Server 7. Configuring JRuby to adjust the SnakeYAML limit will be possible via JAVA_ARGS in the defaults file. Depending on user demand we may look into providing a way via Puppet Server's config to configure the limits once JRuby supports doing so, but that would be quite a ways out. "