In JSON Schema, what is the difference between additionalProperties and additionalItems, as I see examples of both used to specify whether a document containing elements not defined in the schema should be considered valid.

In JSON Schema, what is the difference between additionalProperties and additionalItems, as I see examples of both used to specify whether a document containing elements not defined in the schema should be considered valid.

• javascript
• json
• schema
• jsonschema

1 Answer 1

As of 2019-09 json-schema specification version, additionalProperties is a validation keyword for objects/documents, and additionalItems is a validation keyword for arrays.