# `DELETE /unit`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Delete unit

Deletes `si` for the selected company. Fails with `Unit in use` if articles still reference it.

## Query parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `si` | yes | string |  |

## Response `204`

Deleted

_No content_

## Errors

| Status | Description |
|--------|-------------|
| 400 | Missing si or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Company or unit not found — `{"error":"…"}` |
| 409 | Unit in use — `{"error":"…"}` |

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