# GET /api/v1/counterparty-naming/payee-lines

> Preview giving processor lines back to their payees

- **Tag:** counterparty-naming
- **Operation ID:** `preview_payee_lines`

## Description

Bank lines such as ``GUSTO CND - Laura Combs - US contractor payment`` pay the person named in the description. Lists the rows still stored under the processor (or no name) that would take the payee's name, the saved renames of the processor that would be removed, and rows named something else that need a person's judgement. Nothing is changed.

## Authentication

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

## Responses

### 200 — Successful Response

Schema: `SuccessEnvelope_PayeeLinePreviewResponse_`

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

### 401 — Unauthorized - Missing or expired token, an MCP OAuth token used against the REST API, or no access to this business

Schema: `ErrorResponse`

- `error` (string · required) — Error category: `validation_error`, `unauthorized`, `forbidden`, `not_found`, `conflict`, `rate_limited`, `server_error`, or `service_unavailable`.
- `message` (string · required) — Human-readable explanation, safe to show to end users.
- `code` (string · required) — Stable machine-readable code in `CATEGORY_NNN` form (e.g. `NOT_FOUND_006`, `AUTH_010`, `GEN_002`).
- `request_id` (string) — Correlation id for support requests. Echoes the `x-request-id` request header when one was supplied.
- `errors` (object) — Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

### 403 — Forbidden - Insufficient permissions

Schema: `ErrorResponse`

- `error` (string · required) — Error category: `validation_error`, `unauthorized`, `forbidden`, `not_found`, `conflict`, `rate_limited`, `server_error`, or `service_unavailable`.
- `message` (string · required) — Human-readable explanation, safe to show to end users.
- `code` (string · required) — Stable machine-readable code in `CATEGORY_NNN` form (e.g. `NOT_FOUND_006`, `AUTH_010`, `GEN_002`).
- `request_id` (string) — Correlation id for support requests. Echoes the `x-request-id` request header when one was supplied.
- `errors` (object) — Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

### 422 — Validation Error

Schema: `ErrorResponse`

- `error` (string · required) — Error category: `validation_error`, `unauthorized`, `forbidden`, `not_found`, `conflict`, `rate_limited`, `server_error`, or `service_unavailable`.
- `message` (string · required) — Human-readable explanation, safe to show to end users.
- `code` (string · required) — Stable machine-readable code in `CATEGORY_NNN` form (e.g. `NOT_FOUND_006`, `AUTH_010`, `GEN_002`).
- `request_id` (string) — Correlation id for support requests. Echoes the `x-request-id` request header when one was supplied.
- `errors` (object) — Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

## Code samples

### cURL

```bash
curl -X GET 'https://api.ondayzero.com/api/v1/counterparty-naming/payee-lines' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID'
```

### JavaScript

```javascript
const response = await fetch('https://api.ondayzero.com/api/v1/counterparty-naming/payee-lines', {
  method: 'GET',
  headers: {
    Authorization: 'Bearer dz_your_token',
    'x-business-id': 'YOUR_BUSINESS_ID',
  },
});
const data = await response.json();
```

### Python

```python
import httpx

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

response = httpx.get("https://api.ondayzero.com/api/v1/counterparty-naming/payee-lines", headers=headers)
data = response.json()
```

## See also

- HTML version: https://www.ondayzero.com/docs/reference/counterparty-naming/preview-payee-lines
- OpenAPI slice: https://www.ondayzero.com/docs/reference/counterparty-naming/preview-payee-lines/openapi.json
- Other endpoints in **counterparty-naming**: https://www.ondayzero.com/docs/reference/counterparty-naming (markdown bundle: https://www.ondayzero.com/docs/reference/counterparty-naming.md, OpenAPI: https://www.ondayzero.com/docs/reference/counterparty-naming/openapi.json)
- Endpoint catalog: https://www.ondayzero.com/docs/reference/index.md