docs/data/reusables/copilot/chat-access-denied.md

If you have access to {% data variables.product.prodname_copilot %} via your organization{% ifversion ghec %} or enterprise{% endif %}, you won't be able to use {% data variables.product.prodname_copilot_chat %} if your organization owner{% ifversion ghec %} or enterprise administrator{% endif %} has disabled chat. See "AUTOTITLE."