---
id: "gs1_ai_254"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["gs1", "geo"]
langs: ["common"]
quality: 85
url: "http://registry.apicrafter.io/datatype/gs1_ai_254"
---

# GLN extension component (GS1 AI 254) (`gs1_ai_254`)

> **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.

GS1 element string of Application Identifier (254): '254' followed by an extension, up to 20 characters, that identifies a place inside the physical location whose GLN is in AI (414), such as a room or a shelf. GS1 format N3+X..20. It is a key qualifier in GS1 Digital Link. In the human-readable text under a barcode it is written as (254) and the value.

- Personal data (PII): no
- Categories: GS1 standards (gs1), Geographic identifiers (geo)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^254[!%-?A-Z_a-z\x22]{1,20}$
```

## Examples

- `254B12-R3` — Synthetic extension B12-R3
- `254DOCK7` — Synthetic extension DOCK7
- `254` (invalid example) — No extension

## Mappings

- gs1_ai: `254`

## Sources

- doc: <https://ref.gs1.org/ai/254>

## Quality

Score 85/100. Missing: translation, detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/gs1_ai_254.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/gs1/gs1_ai_254.yaml>