Reference Topics

Encoding

We support web pages which using the following syntaxes.

• RDFa — e.g. <div vocab="https://schema.org/" typeof="Person">
• Embedded JSON-LD — e.g. <script type="application/ld+json">{"@context":"https://schema.org/","@type":"Person"}</script>
• Microdata — e.g. <div itemscope itemtype="https://schema.org/Person">

We also support generic RDF syntaxes in standalone files including: JSON-LD, N-Quads, N-Triples, RDF/XML, TriG, and Turtle.

Schema.org Processor

• Unknown Term — e.g. schema:ExampleUnknown is not a defined term.
• Unexpected Class — e.g. Vehicle class is not expected for an author property.
• Unexpected Value — e.g. DateTime value is not valid for a Boolean property.
• Unexpected Property — e.g. vehicleEngine property is not expected within an ImageObject node.
• Actions: Unbound Constraint — e.g. query-input property is not valid within a CreativeWork node.
• Actions: Invalid Textual Constraint Key — e.g. optional is not a valid short-hand key.
• Roles: Unpropagated Property — e.g. OrganizationRole of a member must itself include a member.

Google Search

• Missing Required Property
• Missing Recommended Property
• Qualified Resource
• Unqualified Resource