How does Google treat multiple, conflicting structured data markups on the same webpage?
When multiple, conflicting structured data markups exist on the same webpage, Google's behavior is predictable but potentially detrimental to rich result display. Structured data is code added to a webpage to provide search engines with specific information about the page's content, enabling rich snippets and other enhanced search features. If there are conflicting markups (e.g., different prices for the same product, disagreeing ratings, multiple main entities), Google's algorithm will attempt to parse the information and choose what it deems most accurate. This selection is not guaranteed to be the website owner's preferred version. The presence of conflicting information can lead to Google ignoring all structured data on the page, preventing rich results from being displayed. Google may also select the wrong information, leading to inaccurate rich snippets, which degrades user experience and can lower click-through rates. To avoid this, use a single, consistent, and validated structured data implementation for each entity on the page. Prioritize accuracy and completeness to give Google the best signal. Using the Rich Results Test tool will highlight potential problems with multiple or conflicting markups. If multiple types of structured data are relevant (e.g., Product and Review), ensure they are properly nested and do not contradict each other.