Google maintains an open source feed validator that provides specific feedback that you can act on beyond straightforward XML validation.
To validate your feed, go to the CAP Validator.
Feed validation tool
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Last updated 2025-08-28 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[],["Google offers an open-source feed validator for detailed feedback beyond XML validation. Users can access the validator via the provided link. The tool, recommended as the most effective way to prepare feeds for Google, should be used to validate feeds before they are submitted to Google. This ensures the feeds are ready for ingestion.\n"]]