# PUT /api/v1/businesses/auto-numbering

> Update auto-numbering settings

- **Tag:** businesses
- **Operation ID:** `update_auto_numbering_settings_api_v1_businesses_auto_numbering_put`

## Description

Configure automatic bill and invoice number generation.

## Authentication

Bearer token in `Authorization` header.
Required header: `x-business-id: <business uuid>`.

## Request body

Schema: `AutoNumberingSettingsUpdateRequest`

- `auto_number_bills` (boolean) — Enable/disable automatic bill numbering
- `auto_number_invoices` (boolean) — Enable/disable automatic invoice numbering
- `bill_number_prefix` (string) — Prefix for auto-generated bill numbers (e.g., 'BILL-', '2024-'). Max 20 chars.
- `invoice_number_prefix` (string) — Prefix for auto-generated invoice numbers (e.g., 'INV-', '2024-'). Max 20 chars.
- `next_bill_number` (integer) — Set next bill number (minimum 1). Useful when migrating from another system.
- `next_invoice_number` (integer) — Set next invoice number (minimum 1). Useful when migrating from another system.

## Responses

### 200 — Successful Response

Schema: `AutoNumberingSettingsResponse`

- `auto_number_bills` (boolean · required) — Whether automatic bill numbering is enabled
- `auto_number_invoices` (boolean · required) — Whether automatic invoice numbering is enabled
- `bill_number_prefix` (string) — Prefix for auto-generated bill numbers (e.g., 'BILL-')
- `invoice_number_prefix` (string) — Prefix for auto-generated invoice numbers (e.g., 'INV-')
- `next_bill_number` (integer · required) — Next sequential number for bill auto-numbering
- `next_invoice_number` (integer · required) — Next sequential number for invoice auto-numbering

### 400 — Bad Request - Invalid input

### 401 — Unauthorized - Authentication required

### 403 — Forbidden - Insufficient permissions

### 404 — Not Found - Resource does not exist

### 422 — Validation Error

Schema: `HTTPValidationError`

- `detail` (array · ValidationError) → `ValidationError`
  - `loc` (array · string | integer · required)
  - `msg` (string · required)
  - `type` (string · required)
  - `input` (object)
  - `ctx` (object)

## Code samples

### cURL

```bash
curl -X PUT 'https://api.ondayzero.com/api/v1/businesses/auto-numbering' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "auto_number_bills": false,
  "auto_number_invoices": false,
  "bill_number_prefix": "string",
  "invoice_number_prefix": "string",
  "next_bill_number": 0,
  "next_invoice_number": 0
}'
```

### JavaScript

```javascript
const response = await fetch('https://api.ondayzero.com/api/v1/businesses/auto-numbering', {
  method: 'PUT',
  headers: {
    Authorization: 'Bearer dz_your_token',
    'x-business-id': 'YOUR_BUSINESS_ID',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "auto_number_bills": false,
  "auto_number_invoices": false,
  "bill_number_prefix": "string",
  "invoice_number_prefix": "string",
  "next_bill_number": 0,
  "next_invoice_number": 0
}),
});
const data = await response.json();
```

### Python

```python
import httpx

headers = {
    "Authorization": "Bearer dz_your_token",
    "x-business-id": "YOUR_BUSINESS_ID",
}

payload = {
  "auto_number_bills": false,
  "auto_number_invoices": false,
  "bill_number_prefix": "string",
  "invoice_number_prefix": "string",
  "next_bill_number": 0,
  "next_invoice_number": 0
}

response = httpx.put("https://api.ondayzero.com/api/v1/businesses/auto-numbering", headers=headers, json=payload)
data = response.json()
```

## See also

- HTML version: https://www.ondayzero.com/docs/reference/businesses/update-auto-numbering-settings
- OpenAPI slice: https://www.ondayzero.com/docs/reference/businesses/update-auto-numbering-settings/openapi.json
- Other endpoints in **businesses**: https://www.ondayzero.com/docs/reference/businesses