01
Where this one gets misread
Structure is a promise about shape, not about correctness. Output can validate perfectly against a schema and be wrong in every field, and schema validation will report success.
Glossary
What is structured data?
Structured data is data organised to a defined schema, such as records with consistent fields, types and relationships between them.
Updated 21 Aug 2026
02
Questions to ask
Ask for a worked example on your own material, and the evidence needed to reproduce it.
- What checks the values, as opposed to the shape?
- What happens when a field cannot be filled honestly?
- Is the schema versioned?
- How are violations surfaced to a person?
03
How Marella uses the term
We use “Structured data” only where a product mechanism or an evaluation method backs it up, and we say when the behaviour depends on how a deployment is configured.
- Backed by a product mechanism or an evaluation method
- Deployment differences flagged
What this page does not prove
- B1A definition is not a claim about how the product performs.
- B2Vendor implementations vary.
- B3Test the term against a representative workflow.
Related pages
Test the claim on your documents
Pick a real piece of work, agree what a good answer looks like, then go through the results together.