Core configuration Core configuration encompasses changes made to the platform as well as supporting applications. These changes can affect global settings as well as settings for particular applications. These settings include: Forms and lists: change the behavior and appearance of forms and lists. Navigation and UI and search: configure how users browse and search in the ServiceNow platform. Time and performance: keep your organization running and on time. Localization and mobile device support: take the ServiceNow platform anywhere. Plugins and out-of-box appendix: expand the ServiceNow platform to fit your needs. Activate a pluginFollow these steps to activate the plugin.Available system propertiesThis page describes properties available to an instance.HTTP 500 errorThe HTTP 500 error is a generic error message that Internet Explorer passes to you when your web site errors for one reason or another; it provides no useful information.Query join and complexity size limitsThe ServiceNow ITSA Suite platform uses a relational database to store data. Retrieving data can involve multiple joins to create a single result set. While these joins are usually simple, in certain cases the system may issue very large joins to bring together large numbers (>20) of tables.Tables and classesIf a table is not included in this list, it does not extend another table.Set up Section 508 compliance featuresFollow the instructions on this page to set up the ServiceNow Section 508 compliance features.Use skip linksSkip links allow users to quickly navigate to the main content on a page, list, or form, bypassing icons, banner text, navigation links, and other elements.Tips for using search methodsThere are several ways to search for information in the ServiceNow user interface. Web proxySeveral ServiceNow properties support web proxy configuration.