使用 Content API 發出補充動態饋給呼叫之前，您必須先在 Merchant Center 中建立補充動態饋給。按照「建立動態饋給」一文中的指示操作，並確實選取「Content API」做為動態饋給來源。不過，用補充動態饋給修改的主要動態饋給可以使用任何來源，包括 Google 試算表、排程擷取、直接上傳或 Content API。
擷取補充動態饋給的 ID
建立補充動態饋給後，請在 Merchant Center 中擷取 feedId，以便用於執行 Content API 呼叫。
[null,null,["上次更新時間：2025-08-13 (世界標準時間)。"],[[["\u003cp\u003eThe Merchant API is the new version of the Content API for Shopping and represents the future of product data integration.\u003c/p\u003e\n"],["\u003cp\u003eTo use supplemental feeds, you must first create them in Merchant Center and select "Content API" as the feed source, while your primary feed can use any source.\u003c/p\u003e\n"],["\u003cp\u003eSupplemental feeds cannot be directly created via the Content API, but their \u003ccode\u003efeedId\u003c/code\u003e can be retrieved from Merchant Center for use in API calls.\u003c/p\u003e\n"]]],["The beta version of the Merchant API, the new Content API for Shopping, is introduced. To use supplemental feeds, users must first create them in Merchant Center, choosing \"Content API\" as the source, though the primary feed can be from any source. Supplemental feeds cannot be created directly via the Content API. To use the feeds, the feed ID must be retrieved from Merchant Center by selecting \"Products \u003e Feeds\" and viewing the feed's settings.\n"],null,["# Create supplemental feeds\n\nBefore you can make supplemental feed calls with the Content API, you have to\ncreate a supplemental feed in Merchant Center. Follow the instructions in\n[Create a feed](//support.google.com/merchants/answer/7439058)\nand make sure you select **Content API** as the feed source. However, the primary\nfeed that you modify with the supplemental feed can use any source, including\nGoogle Sheets, scheduled fetch, direct upload, or Content API.\n| **Note:** It isn't possible to create supplemental feeds directly via the Content API.\n\nRetrieve IDs for supplemental feeds\n-----------------------------------\n\nAfter creating a supplemental feed, retrieve the `feedId` in Merchant Center so\nthat you can use it to make Content API calls.\n\nTo retrieve a `feedId`, follow these steps:\n\n1. In [Merchant Center](//merchants.google.com), select **Products \\\u003e Feeds**.\n2. In the **Supplemental feeds** section, click the feed name, then the **Settings** tab."]]
