nautechsystems/nautilus_trader · error

cancel-all response contains duplicate order ID {} for {}

Error message

cancel-all response contains duplicate order ID {} for {}

What it means

During cancel-all/cancel-list processing, prepare_cancel_order de-duplicates the (instrument_id, order_id) pairs and client order IDs collected from child reports. A duplicate order ID for the same instrument means Binance reported the same order twice in one response, which the adapter treats as a protocol violation rather than silently dropping it.

Source

Thrown at crates/adapters/binance/src/spot/execution.rs:2634

    );
    anyhow::ensure!(
        response.status == SbeOrderStatus::Canceled,
        "order {} reports status {:?}, expected Canceled",
        response.order_id,
        response.status,
    );
    let client_order_id = decode_client_order_id(
        &response.orig_client_order_id,
        BINANCE_NAUTILUS_SPOT_BROKER_ID,
    )?;
    let instrument_id = InstrumentId::new(response.symbol.as_str().into(), *BINANCE_VENUE);
    anyhow::ensure!(
        order_ids.insert((instrument_id, response.order_id)),
        "cancel-all response contains duplicate order ID {} for {}",
        response.order_id,
        instrument_id,
    );
    anyhow::ensure!(
        client_order_ids.insert(client_order_id),
        "cancel-all response contains duplicate client order ID {client_order_id}",
    );
    prepared.push(PreparedCancelOrder {
        venue_order_id: VenueOrderId::new(response.order_id.to_string()),
        transaction_time: response.transact_time,
        client_order_id,
        instrument_id,
        order_list,
    });
    Ok(())
}

fn dispatch_order_list_canceled(
    canceled_order: &PreparedCancelOrder,
    emitter: &ExecutionEventEmitter,
    account_id: AccountId,
    state: &WsDispatchState,

View on GitHub (pinned to 18893faf8b)

Solutions

1. Retry the cancel operation once to get a clean response
2. Deduplicate orders before issuing cancel-all by tracking open order IDs
3. Report reproducible duplicate responses to the adapter maintainers
4. Use individual cancels as a fallback

if let Err(e) = result { if e.to_string().contains("duplicate order ID") { retry_once_then_fallback_to_single_cancels(); } }

When it happens

Trigger: A Binance cancel-all/cancel-list response containing the same (symbol, order_id) pair or the same orig_client_order_id more than once — indicative of a malformed or duplicated batch response.

Common situations: Very rare; typically seen during Binance API anomalies, SBE decode issues, or when replaying/retrying a cancel request that was partially applied.

Related errors

• order list {} is missing {} child reports
• cancel-all response has an invalid order ID, symbol, or orig
• WS cancel order failed: {e}
• WS cancel order failed: {e}
• cancel-all response contains an order for a different instru

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/8e2b279a79928aff. Report an issue: GitHub.