# `PATCH /delivery/{id}`

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

Update delivery

Patches header fields that are present. The manifest `number` is
auto-allocated and cannot be patched; only the user-supplied
`externalNumber` reference is editable. If `lines` is present,
replaces all lines; if omitted, leaves lines unchanged.


## Path parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `id` | yes | integer |  |

## Body (JSON)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `externalNumber` | no | string | User-supplied reference number (empty/null clears it) |
| `date` | no | string |  |
| `supplierId` | no | integer |  |
| `lines` | no | DeliveryLineInput[] |  |
| `files` | no | DeliveryFileInput[] | Appends attachments (pdf or txt) to the delivery. Omit to leave existing files unchanged. Thumbnails (AVIF) are generated server-side. |

```json
{
  "externalNumber": "DHL-124",
  "lines": []
}
```

## Body (`multipart/form-data`)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `data` | no | string | JSON string containing patch fields ({ externalNumber, date, supplierId, lines, filesMeta? }).
 |
| `files` | no | file | Raw binary PDF or text files to append to the delivery. |

## Response `200`

Updated delivery

```json
{
  "delivery": {
    "id": 1,
    "number": "…",
    "type": "delivery",
    "supplierId": 1,
    "externalNumber": "…",
    "date": "2026-08-10T00:00:00.000Z",
    "createdAt": "2026-08-10T00:00:00.000Z",
    "ledger": {
      "totalPositions": 1,
      "completelyOnLedgerPositions": 1
    },
    "lines": [
      {
        "id": 1,
        "sku": "…",
        "name": "…",
        "pu": 1,
        "amount": 1,
        "net": 1,
        "rebate": 1,
        "taxrate": 1,
        "comment": "…"
      }
    ],
    "files": [
      {
        "id": 1,
        "manifestId": 1,
        "fileId": 1,
        "sort": 1,
        "hash": "…",
        "mimetype": "…",
        "name": "…",
        "size": 1,
        "created": "2026-08-10T00:00:00.000Z",
        "modified": "2026-08-10T00:00:00.000Z",
        "skeledash": "…",
        "thumbx": 1,
        "thumby": 1,
        "meta": {}
      }
    ]
  }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Invalid delivery, invalid lines, invalid id, or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Delivery, supplier, or company not found — `{"error":"…"}` |
| 409 | Delivery lines already booked on ledger — `{"error":"…"}` |

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