# PUT /api/v1/contracts/settings

> Update Order-to-Cash settings

- **Tag:** contracts
- **Operation ID:** `update_o2c_settings_api_v1_contracts_settings_put`

## Description

Persist the business's O2C configuration defaults (invoice cadence, default net days, tax treatment, hours/invoice approver roles) and return the stored settings.

## Authentication

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

## Request body

Schema: `O2CSettings`

- `invoice_cadence` (InvoiceCadenceEnum) → `InvoiceCadenceEnum` — Default recurring invoice cadence: calendar_month or four_week.
- `default_net_days` (integer) — Default payment terms as net days (e.g. 30 for Net 30).
- `default_tax_treatment` (string) — Default tax treatment applied to new invoices (e.g. 'exempt').
- `hours_approver_role` (string) — Role permitted to approve hours/drawdowns (e.g. 'admin').
- `invoice_approver_role` (string) — Role permitted to approve/send invoices (e.g. 'admin').

## Responses

### 200 — Successful Response

Schema: `O2CSettings`

- `invoice_cadence` (InvoiceCadenceEnum) → `InvoiceCadenceEnum` — Default recurring invoice cadence: calendar_month or four_week.
- `default_net_days` (integer) — Default payment terms as net days (e.g. 30 for Net 30).
- `default_tax_treatment` (string) — Default tax treatment applied to new invoices (e.g. 'exempt').
- `hours_approver_role` (string) — Role permitted to approve hours/drawdowns (e.g. 'admin').
- `invoice_approver_role` (string) — Role permitted to approve/send invoices (e.g. 'admin').

### 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/contracts/settings' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "invoice_cadence": "string",
  "default_net_days": 0,
  "default_tax_treatment": "string",
  "hours_approver_role": "string",
  "invoice_approver_role": "string"
}'
```

### JavaScript

```javascript
const response = await fetch('https://api.ondayzero.com/api/v1/contracts/settings', {
  method: 'PUT',
  headers: {
    Authorization: 'Bearer dz_your_token',
    'x-business-id': 'YOUR_BUSINESS_ID',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "invoice_cadence": "string",
  "default_net_days": 0,
  "default_tax_treatment": "string",
  "hours_approver_role": "string",
  "invoice_approver_role": "string"
}),
});
const data = await response.json();
```

### Python

```python
import httpx

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

payload = {
  "invoice_cadence": "string",
  "default_net_days": 0,
  "default_tax_treatment": "string",
  "hours_approver_role": "string",
  "invoice_approver_role": "string"
}

response = httpx.put("https://api.ondayzero.com/api/v1/contracts/settings", headers=headers, json=payload)
data = response.json()
```

## See also

- HTML version: https://www.ondayzero.com/docs/reference/contracts/update-o2c-settings
- OpenAPI slice: https://www.ondayzero.com/docs/reference/contracts/update-o2c-settings/openapi.json
- Other endpoints in **contracts**: https://www.ondayzero.com/docs/reference/contracts