[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-08-31 (世界標準時間)。"],[[["\u003cp\u003eProduct data like price and availability requires regular updates to stay current.\u003c/p\u003e\n"],["\u003cp\u003eSupplemental feeds, created through the Merchant Center UI and linked to a primary feed, offer a way to update product data.\u003c/p\u003e\n"],["\u003cp\u003eAutomatic item updates provide a way to fix minor discrepancies in price and availability by utilizing structured data from your website.\u003c/p\u003e\n"],["\u003cp\u003eThe Products API allows for programmatic updates of product information, including using methods for creating, updating, and batching changes.\u003c/p\u003e\n"]]],[],null,["# Maintain a product feed\n\nSummary\n-------\n\nSome product data, like price and availability, naturally changes over time.\nYou need to maintain your product feed regularly to keep this information\nup-to-date.\n\nYou can use supplemental feeds and the [Products API](/shopping-content/guides/products/products-api) to update product\ndata. Supplemental feeds can only be created in the\n[Merchant Center UI](https://merchants.google.com), and they must be linked to a primary\nfeed.\n\nManual steps\n------------\n\nTo maintain your inventory with supplemental feeds, see [Create a supplemental\nfeed](//support.google.com/merchants/answer/7439058#supplemental).\n\nYou can also use [automatic item updates](//support.google.com/merchants/answer/3246284) to keep\nprice and availability information up-to-date. Merchant Center can use embedded\nstructured data from your website to update products if the price or\navailability differs from the information currently stored in the Merchant Center.\n\nAutomatic item updates are designed to fix small problems with product\nprice and availability, not to be the main method of updating product data. You\nshould use them in addition to supplemental feeds and the Content API.\n\nTo enable automatic item updates, follow the steps in\n[About automatic item updates](//support.google.com/merchants/answer/3246284).\n\nAutomatic steps\n---------------\n\nTo update information product information with the Content API for Shopping,\nuse the [Products API](/shopping-content/guides/products/products-api).\n\nYou can use the [`insert`](/shopping-content/guides/products/products-api#productsinsert) and [`update`](/shopping-content/guides/products/products-api#productsupdate) methods to create and update\nindividual items.\n\nLike product inserts and updates, multiple inventory updates can be batched into\na single Content API for Shopping call using the [`products.custombatch`](/shopping-content/reference/rest/v2.1/products/custombatch) method."]]