In Sitecore, it’s often necessary to ensure certain conditions are met before allowing the deletion of an item. For example, you may want to prevent the deletion of items that are still published. In this guide, I’ll show you how to add a validation check before deleting an item in Sitecore Content Editor. Step 1: Creating the Configuration File First, we must create a configuration file that integrates our custom processor into the Sitecore delete item pipeline. This processor will perform validation checks before allowing an item to be deleted. Explanation: The configuration element defines the structure of the configuration file. The processors element contains pipeline processors for various actions in Sitecore. The uiDeleteItems element specifies the pipeline for deleting items in the UI. The processor element adds our custom processor ( CustomDeleteHandler ) before the existing CheckPermissions processor. This configuration ensures that our custom delete handler will run