---
id: "dwc_occurrence_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["science", "environment"]
langs: ["common"]
quality: 60
url: "https://registry.apicrafter.io/datatype/dwc_occurrence_id"
---

# Darwin Core occurrence id (`dwc_occurrence_id`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Identifier of an occurrence record (Darwin Core occurrenceID): a value that the publisher keeps unique and persistent for an observation or a specimen, often the catalog number or a URN or URL built from it.

- Parent datatype: `id`
- Personal data (PII): no
- Categories: Scientific (science), Environment (protected areas, biodiversity, water, weather, emissions, waste) (environment)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Examples

- `CABCN25KZ00001` — Central Asian flora occurrence
- `APQA-20260552` — Specimen
- `urn:catalog:UWBM:Bird:89776` — Darwin Core example

## Metacrafter rules

1 rules: 1 match the field name, 0 match values.

- `dwcoccurrenceidbyfield` (field, `common/science.yaml`)

## Supported by tools

- `metacrafter`

## Sources

- doc: <https://dwc.tdwg.org/terms/#dwc:occurrenceID>

## Quality

Score 60/100. Missing: regexp, negative example, mapping (Wikidata, Schema.org, ...), translation.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/dwc_occurrence_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/science/dwc_occurrence_id.yaml>