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Correct an existing feed
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Summary
If you already have a product feed, you may need to reformat its content to
match the format that Google expects. This section explains how you can use an
existing feed with your Merchant Center account. You can only do this through
the Merchant Center UI.
See the Common issues section for a list of the most
common product data issues.
Manual steps
- Choose one of our Supported file formats.
If your existing feed doesn't match a supported format, convert it to one
that does.
If items in your existing feed don't match the
Product data specification, you can set up feed rules to reformat
your product data automatically. You may have to format some feed data
manually.
You can remove any information from your feed that Merchant Center
doesn't require.
If your existing feed is missing required information, add it before you
upload the feed.
Upload a feed to Merchant Center.
Automatic steps
Not available for this process.
Common issues
Here are some common issues you may encounter:
- Item requires a GTIN
- See Find a GTIN to identify the GTIN for your product.
- Incorrect product identifiers
- See About unique product identifiers to determine which of these attributes
you need to provide and how to find their values.
- Wait up to 3 days for image crawl to complete
- Google tries to crawl your product images automatically. No action is needed.
- Homepage not claimed
- See Verify and claim URL for Merchant Center.
- URL doesn't match homepage
- The URL provided in your Merchant Center account doesn't match the homepage of
your website.
- Landing page can't be crawled
The landing page URL for your product must contain the URL you claimed
in your Merchant Center account. In addition, Google's crawler must be able to
access your landing page, and the product information on the landing
page must match the information in your feed.
See Troubleshoot uncrawlable landing pages for more information.
- Missing or invalid price and availability
See the Price & Availability section of the Product data specification for
more information.
- Missing images
Your feed contains products that are missing images.
- Invalid images
Your feed contains products whose images don't meet the required format.
See How to fix: Invalid image for more information.
- Generic images
See How to fix: Generic image for more information.
- Images too small
Your feed contains products whose images are too small to be used.
See How to fix: Image too small for more information.
- Items preemptively disapproved due to data quality violation (watermarks or promotional text)
See the specification for the image link attribute, which includes the
requirements for product images.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-28 UTC.
[null,null,["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eReformat your existing product feed to match Google's supported formats for seamless integration with Merchant Center.\u003c/p\u003e\n"],["\u003cp\u003eUtilize feed rules to automatically adjust product data and manually address any remaining discrepancies to meet specifications.\u003c/p\u003e\n"],["\u003cp\u003eEnsure your feed includes all required information and remove any unnecessary data before uploading it to Merchant Center.\u003c/p\u003e\n"],["\u003cp\u003eTroubleshoot common issues, like incorrect product identifiers or missing images, by referring to the provided resources and guidelines.\u003c/p\u003e\n"],["\u003cp\u003eAddress data quality violations, such as watermarks on images or inaccurate price/availability, to avoid product disapprovals.\u003c/p\u003e\n"]]],[],null,["# Correct an existing feed\n\nSummary\n-------\n\nIf you already have a product feed, you may need to reformat its content to\nmatch the format that Google expects. This section explains how you can use an\nexisting feed with your Merchant Center account. You can only do this through\nthe [Merchant Center UI](https://merchants.google.com).\n\nSee the [Common issues](#common_issues) section for a list of the most\ncommon product data issues.\n\nManual steps\n------------\n\n1. Choose one of our [Supported file formats](//support.google.com/merchants/answer/160567).\n2. If your existing feed doesn't match a supported format, convert it to one\n that does.\n\n - If items in your existing feed don't match the\n [Product data specification](//support.google.com/merchants/answer/188494), you can [set up feed rules](//support.google.com/merchants/answer/6302307) to reformat\n your product data automatically. You may have to format some feed data\n manually.\n\n - You can remove any information from your feed that Merchant Center\n doesn't require.\n\n - If your existing feed is missing required information, add it before you\n upload the feed.\n\n3. [Upload a feed](//support.google.com/merchants/answer/188477) to Merchant Center.\n\nAutomatic steps\n---------------\n\nNot available for this process.\n\nCommon issues\n-------------\n\nHere are some common issues you may encounter:\n\nItem requires a GTIN\n: See [Find a GTIN](//support.google.com/merchants/answer/6219078) to identify the GTIN for your product.\n\nIncorrect product identifiers\n: See [About unique product identifiers](//support.google.com/merchants/answer/160161) to determine which of these attributes\n you need to provide and how to find their values.\n\nWait up to 3 days for image crawl to complete\n: Google tries to crawl your product images automatically. No action is needed.\n\nHomepage not claimed\n: See [Verify and claim URL for Merchant Center](/google-ads/shopping/full-automation/articles/t4).\n\nURL doesn't match homepage\n: The URL provided in your Merchant Center account doesn't match the homepage of\n your website.\n\nLanding page can't be crawled\n\n: The landing page URL for your product must contain the URL you claimed\n in your Merchant Center account. In addition, Google's crawler must be able to\n access your landing page, and the product information on the landing\n page must match the information in your feed.\n\n: See [Troubleshoot uncrawlable landing pages](//support.google.com/adwords/answer/9229701) for more information.\n\nMissing or invalid price and availability\n\n: See the [Price \\& Availability](//support.google.com/merchants/answer/7052112#availability) section of the Product data specification for\n more information.\n\nMissing images\n\n: Your feed contains products that are missing images.\n\nInvalid images\n\n: Your feed contains products whose images don't meet the required format.\n\n: See [How to fix: Invalid image](//support.google.com/merchants/answer/6098289) for more information.\n\nGeneric images\n\n: See [How to fix: Generic image](//support.google.com/merchants/answer/6098288) for more information.\n\nImages too small\n\n: Your feed contains products whose images are too small to be used.\n\n: See [How to fix: Image too small](//support.google.com/merchants/answer/6205396) for more information.\n\nItems preemptively disapproved due to data quality violation (watermarks or promotional text)\n\n: See the specification for the [image link attribute](//support.google.com/merchants/answer/6324350), which includes the\n requirements for product images."]]
