# How to Enable US Core IG {% hint style="warning" %} This tutorial is deprecated. Since the 2405 release, using Aidbox in FHIRSchema mode is recommended, which is incompatible with zen or Entity/Attribute options. [Broken link](broken-reference) {% endhint %} Enabling US Core IG allows you to use its various features in Aidbox. If you are just starting out with Aidbox, proceed to the following page: {% content-ref url="broken-reference" %} [Broken link](broken-reference) {% endcontent-ref %} If you already have a running Aidbox instance, proceed to the following page: {% content-ref url="add-us-core-ig-to-a-running-aidbox-instance.md" %} [add-us-core-ig-to-a-running-aidbox-instance.md](add-us-core-ig-to-a-running-aidbox-instance.md) {% endcontent-ref %}