# POST /api/v1/bills/bulk

> Bulk create bills

- **Tag:** bills
- **Operation ID:** `create_bulk_bills_api_v1_bills_bulk_post`

## Description

Create multiple bills from CSV data in a single request.

## Authentication

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

## Request body

Schema: `BillBulkRequest`

- `s3_key` (string) — S3 key of the uploaded CSV file containing bill data.
- `approve` (boolean) — If true, created bills are set to 'forecasted' status (approved). If false, bills remain as 'draft'.
- `create_as_received` (boolean) — If true, every row is created in 'received' status with an accounting journal entry. Each row must have a resolvable expense ledger (ledger_id, ledger_name, or expense_account column) and a valid amount. Overrides `approve` when set.
- `attachments` (object) — Optional mapping of source filename → pre-uploaded S3 key (from POST /bills/upload). Rows whose `attachment_filename` matches a key in this map have the corresponding document attached.

## Responses

### 201 — Successful Response

Schema: `SuccessEnvelope_BillsListResponse_`

- `success` (boolean)
- `message` (string)
- `code` (string)
- `data` (BillsListResponse)

### 400 — Bad Request - Invalid input

### 401 — Unauthorized - Authentication required

### 403 — Forbidden - Insufficient permissions

### 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 POST 'https://api.ondayzero.com/api/v1/bills/bulk' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "s3_key": "string",
  "approve": false,
  "create_as_received": false,
  "attachments": {}
}'
```

### JavaScript

```javascript
const response = await fetch('https://api.ondayzero.com/api/v1/bills/bulk', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer dz_your_token',
    'x-business-id': 'YOUR_BUSINESS_ID',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "s3_key": "string",
  "approve": false,
  "create_as_received": false,
  "attachments": {}
}),
});
const data = await response.json();
```

### Python

```python
import httpx

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

payload = {
  "s3_key": "string",
  "approve": false,
  "create_as_received": false,
  "attachments": {}
}

response = httpx.post("https://api.ondayzero.com/api/v1/bills/bulk", headers=headers, json=payload)
data = response.json()
```

## See also

- HTML version: https://www.ondayzero.com/docs/reference/bills/create-bulk-bills
- OpenAPI slice: https://www.ondayzero.com/docs/reference/bills/create-bulk-bills/openapi.json
- Other endpoints in **bills**: https://www.ondayzero.com/docs/reference/bills