> For the complete documentation index, see [llms.txt](https://licenses.ishare.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://licenses.ishare.eu/legacy-identifiers.md).

# Legacy Identifier Mapping

Earlier iSHARE Framework versions used short numeric identifiers (`0000`, `0001`, …) to reference licenses in delegation evidence. From Framework v3.0 onwards, the canonical license identifier is a fully-qualified URL (e.g. `https://licenses.ishare.eu/general-unrestricted/1.0`).

This page defines the canonical mapping from every recognised legacy identifier — in both bare and namespaced form — to its v3.0 canonical URL, and the timeline for the transition.

## Mapping table

Both the bare form (`0001`) and the namespaced form (`ISHARE.0001`) MUST be treated as equivalent and MUST map to the same canonical URL.

| Legacy identifier (bare) | Legacy identifier (namespaced) | Canonical URL                                                            |
| ------------------------ | ------------------------------ | ------------------------------------------------------------------------ |
| `0000`                   | `ISHARE.0000`                  | `https://licenses.ishare.eu/general-unrestricted/1.0`                    |
| `0001`                   | `ISHARE.0001`                  | `https://licenses.ishare.eu/general-resharing-with-adhering-parties/1.0` |
| `0002`                   | `ISHARE.0002`                  | `https://licenses.ishare.eu/general-internal-use/1.0`                    |
| `0003`                   | `ISHARE.0003`                  | `https://licenses.ishare.eu/general-non-commercial-use/1.0`              |
| `0004`                   | `ISHARE.0004`                  | `https://licenses.ishare.eu/general-enrich-with-own-data/1.0`            |
| `0005`                   | `ISHARE.0005`                  | `https://licenses.ishare.eu/general-enrich-with-others-data/1.0`         |
| `0008`                   | `ISHARE.0008`                  | `https://licenses.ishare.eu/general-use-to-service-entitled-party/1.0`   |
| `9999`                   | `ISHARE.9999`                  | `https://licenses.ishare.eu/general-determined-between-parties/1.0`      |

### Gaps and licenses without a legacy form

* **`0006` and `0007`** were never assigned in the legacy scheme.
* **`general-internal-use-insights`** and **`general-enrich-with-third-party-generated-data`** are v3.0 additions and have no legacy numeric form. They MUST be referenced by canonical URL only.
* **All certification, country, and industry licenses** have no legacy numeric form. They MUST be referenced by canonical URL only.