Schema.org

Unexpected Property

This message indicates that a valid property was found, but it is not one of the documented, expected properties for any of the resource types. Generally, agents will ignore properties that are not explicitly associated with a type, so it is always better to use type-recommended properties, when possible.

Examples

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{ "@context": "http://schema.org",
  "@type": "ImageObject",
  "addressCountry": "US" }