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An inventory component is the raw material your ad server exposes — ad units, placements, avails, and related inventory detail — before it is packaged for sale. Components come from a connected ad-server inventory source when it syncs; they are discovered rather than authored, and are not directly sellable on their own. In Inventory Components, accept components you want available for product authoring, hide ones you do not want to use, or remap a component when its publisher, property, or placement needs correction. These decisions prepare the inventory you select from when you create a product; they do not alter the source inventory in your ad server. The Merchandising Agent uses accepted components when it composes products at discovery. Review mappings before creating products so the agent starts with the inventory and representation you intend to sell. Read the component glossary entry for the distinction between a component, product, source, and selector. Then follow Create products from ad-server inventory to turn reviewed components into products buyers can discover and buy.