Schema Markup
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Schema.org

Unexpected Value

This generic message indicates that a value could not be matched to an expected type for a property. This can be due to several reasons, including:

  • Formatting — an improper syntax or format for data types which have expected values (e.g. dates, times); or
  • Enumeration — an invalid reference or textual name for the type; or
  • Controlled Vocabulary — an invalid reference or textual name for the vocabulary; or
  • Type — an unexpected data type was used.

Examples

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{ "@context": "http://schema.org",
  "@type": "Offer",
  "availability": {
    "@id": "http://schema.org/Monday" } }
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{ "@context": "http://schema.org",
  "@type": "Offer",
  "availability": {
    "@id": "http://schema.org/ExampleUnknown" } }
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{ "@context": "http://schema.org",
  "@type": "Offer",
  "availability": false }
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{ "@context": "http://schema.org",
  "@type": "Event",
  "startDate": "day 4 of week 3 of month 2 of quarter 1" }