Before you install your application, ensure that you complete all of the following tasks.

1. Ensure that you can stop and start the application server.
2. Before starting an installation, and before backing up your system, review the database policies and application permissions that are used by your Pega Platform installation. Determine whether the application is permitted to update the database automatically or if you must generate the database scripts that your organization will use to manually make schema changes.
3. Install the latest version of Pega Platform 8.5, and ensure that you can log in as an administrator. For more information, see the Pega Platform Install Guide for your environment on the Deploy Pega Platform page.
4. Install and verify Pega Customer Decision Hub 8.5. For information, see the Installation Guide on the Pega Customer Decision Hub product page.

   Apply the required hotfixes by using the Hotfix Manager. For more information, see Hotfix management.

   For the list of hotfixes for Pega Customer Decision Hub, see the Pega Customer Decision Hub hotfixes page.