## Cancel Position Instruction

`v1.positions.cancel_position_instruction(strinstruction_id, PositionCancelPositionInstructionParams**kwargs)  -> PositionCancelPositionInstructionResponse`

**delete** `/v1/accounts/{account_id}/positions/instructions/{instruction_id}`

Cancel an outstanding position instruction by its server-assigned `id`.
Returns the updated instruction with status `CANCEL_REQUESTED`. The
terminal `CANCELLED` or `CANCEL_FAILED` state arrives asynchronously and
is observable via subsequent GETs.

### Parameters

- `account_id: int`

- `instruction_id: str`

### Returns

- `class PositionCancelPositionInstructionResponse: …`

  - `data: PositionInstruction`

    A position instruction and its current lifecycle state.

    - `id: str`

      Server-assigned id. Used as the path parameter on cancel.

    - `account_id: int`

      Account the instruction belongs to.

    - `instruction_id: str`

      Caller-supplied idempotency key echoed from the submit request; the
      server-assigned fallback when none was supplied.

    - `instruction_type: PositionInstructionType`

      The action this instruction requests.

      - `"EXERCISE"`

      - `"DO_NOT_EXERCISE"`

      - `"CONTRARY_EXERCISE"`

    - `instrument_id: str`

      Identifier of the options contract this instruction acts on.

    - `quantity: str`

      Number of contracts included in the instruction.

    - `status: PositionInstructionStatus`

      Current lifecycle status.

      - `"SENT"`

      - `"ACCEPTED"`

      - `"REJECTED"`

      - `"ENGINE_REJECTED"`

      - `"CANCEL_REQUESTED"`

      - `"CANCELLED"`

      - `"CANCEL_FAILED"`

      - `"UNKNOWN"`

    - `symbol: str`

      Options symbol (OSI) for display.

    - `accepted_quantity: Optional[str]`

      Number of contracts accepted by the clearing venue. Populated once
      the instruction reaches `ACCEPTED`.

    - `created_at: Optional[datetime]`

      When the instruction was first accepted by the service.

    - `rejection_reason: Optional[str]`

      Human-readable explanation populated on any non-success terminal
      status — `REJECTED`, `ENGINE_REJECTED`, or `CANCEL_FAILED`. On a
      `207 Multi-Status` batch submit the top-level `error` field
      summarizes the batch; per-row detail continues to live here.

    - `updated_at: Optional[datetime]`

      When the instruction's lifecycle state last changed.

### Example

```python
from clear_street import ClearStreet

client = ClearStreet(
    api_key="My API Key",
)
response = client.v1.positions.cancel_position_instruction(
    instruction_id="182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
    account_id=0,
)
print(response)
```

#### Response

```json
{
  "metadata": {
    "request_id": "request_id",
    "next_page_token": "U3RhaW5sZXNzIHJvY2tz",
    "page_number": 0,
    "previous_page_token": "U3RhaW5sZXNzIHJvY2tz",
    "total_items": 0,
    "total_pages": 0
  },
  "error": {
    "code": 400,
    "message": "Order quantity must be greater than zero",
    "details": [
      {
        "foo": "bar"
      }
    ]
  },
  "data": {
    "id": "0195f6d0-a1b2-7c3d-8e4f-5a6b7c8d9e02",
    "account_id": 122503,
    "instruction_id": "ui-20260424-001",
    "instruction_type": "EXERCISE",
    "instrument_id": "0195f6d0-a1b2-7c3d-8e4f-5a6b7c8d9e02",
    "quantity": "1",
    "status": "SENT",
    "symbol": "AAPL  280121C00195000",
    "accepted_quantity": null,
    "created_at": "2026-04-24T14:30:00Z",
    "rejection_reason": null,
    "updated_at": "2026-04-24T14:30:00Z"
  }
}
```