FAIRsharing record for: FAIR Metric – R1.3 - Metadata – use of ISO 639 language

This FAIRsharing record describes: ### What is being measured?

This metric evaluates whether the metadata for the digital object includes at least one resolvable language attribute defined by the ISO 639 standard. It evaluates the value held in the language field against the official ISO 639 registry, searching for a valid, standardised code (specifically 639-2 / 639:2023) or a URI pointing to an ISO term.

### Why should we measure it?

Linguistic interoperability is essential for the international discovery and reuse of research data. For institutional repositories and other generalist contexts, the use of ISO 639 codes ensures that datasets are correctly indexed by global aggregators and assistive technologies. Measuring this alignment confirms that the repository is following a recognised community standard for linguistic description, satisfying the requirements of R1.3.