# Catalog and Inventory Before people can buy products in your Facebook shop or Instagram Shopping account, you need to upload them in a Facebook **catalog**. ## Guides Use these guides to manage your catalog, including the inventory [field requirements](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/inventory). Learn more about [Catalogs, Business Help Center](https://www.facebook.com/business/help/890714097648074?id=725943027795860) and [Catalog, Marketing API](https://developers.facebook.com/documentation/ads-commerce/catalog/overview). ### [Product Catalog](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/overview) Learn more about catalog, attributes, data sources, real-time updates and diagnostics. ### [Catalog Fields](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/fields) Learn more about the catalog fields that describe the type or category of commerce products in your listing. ### [Product Categories](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/categories) Learn about product categories, tax calculation and purchase protection. ### [Product Variants](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/variants) Learn more about product variants. ### [Product Set Collection API](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/collections) Learn how to use this API to create collections used in Shops. ### [Inventory](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/inventory) Learn how to manage your catalog inventory. Note: See [Quantity to Sell](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/quantity-to-sell) ### [Feed API Reference](https://developers.facebook.com/documentation/ads-commerce/catalog/guides/feed-api) Learn now to schedule data feed uploads and fetches. ### [Catalog Diagnostics API](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/overview#diagnostics) Learn how to implement the Catalog Diagnostics API. ### [Batch API Reference](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/batch-api) Learn how to use Batch API and real-time updates. ### [Best Practices](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/best-practices) Learn more about best practices. ### [Localized Catalog for International Shopping](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/localized) Learn how to set up your catalog for localized shopping with multiple languages and countries. ### [Update Ads Catalog to Commerce Catalog](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/updating) Learn how to upgrade your ads catalog to commerce use case. ## See Also * [Localized Catalog Setup](https://developers.facebook.com/documentation/ads-commerce/catalog/localized-catalog/localized-catalog-setup) * [Localized Catalog for Advantage+ Catalog Ads](https://developers.facebook.com/documentation/ads-commerce/catalog/localized-catalog-da) * [Localized Catalog for Instagram Shopping](https://developers.facebook.com/documentation/ads-commerce/commerce-platform/catalog/localized)