nautechsystems/nautilus_trader · error · anyhow::Error

Stop limit orders require a trigger price

Error message

Stop limit orders require a trigger price

What it means

StopLimit orders require both a trigger price (to arm the order) and a limit price (to execute it). The adapter bails with this message when order.trigger_price() is None for a StopLimit order, because Hyperliquid's trigger order request needs trigger_px to construct the order.

Source

Thrown at crates/adapters/hyperliquid/src/common/parse.rs:595

        }
        OrderType::StopLimit => {
            if let Some(trigger_price) = order.trigger_price() {
                let raw = trigger_price.as_decimal();
                let trigger_price_decimal = if should_normalize_prices {
                    normalize_price(raw, price_decimals).normalize()
                } else {
                    raw.normalize()
                };
                let tpsl = determine_tpsl_type(order_type, order_side, trigger_price_decimal, None);
                HyperliquidExchangeOrderKind::Trigger {
                    trigger: HyperliquidExchangeTriggerParams {
                        is_market: false,
                        trigger_px: trigger_price_decimal,
                        tpsl,
                    },
                }
            } else {
                anyhow::bail!("Stop limit orders require a trigger price")
            }
        }
        OrderType::MarketIfTouched => {
            if let Some(trigger_price) = order.trigger_price() {
                let raw = trigger_price.as_decimal();
                let trigger_price_decimal = if should_normalize_prices {
                    normalize_price(raw, price_decimals).normalize()
                } else {
                    raw.normalize()
                };
                HyperliquidExchangeOrderKind::Trigger {
                    trigger: HyperliquidExchangeTriggerParams {
                        is_market: true,
                        trigger_px: trigger_price_decimal,
                        tpsl: HyperliquidExchangeTpSl::Tp,
                    },
                }
            } else {

View on GitHub (pinned to 18893faf8b)

Solutions

1. Pass a trigger price when building the StopLimit order (order_factory.stop_limit(..., trigger_price)).
2. Ensure the trigger-computation step runs before order creation and yields a valid price.
3. Add pre-submit validation requiring Some(trigger_price) for StopLimit and StopMarket orders.
4. If only a limit price was intended without a trigger, submit a plain Limit order instead.

Example fix

// before
let order = order_factory.stop_limit(instrument_id, side, qty, price, None); // no trigger
// after
let trigger = Price::from("41000.0");
let order = order_factory.stop_limit(instrument_id, side, qty, price, Some(trigger));

if order.order_type() == OrderType::StopLimit
    && (order.trigger_price().is_none() || order.price().is_none()) {
    return Err(anyhow::anyhow!("stop limit {} needs both trigger and limit price", order.client_order_id()));
}

When it happens

Trigger: Submitting or modifying a StopLimit order through submit_order, submit_orders, order_request, or modify_order where the order lacks a trigger price — construction with order_factory.limit(...).to_stop_limit style helpers or deserialization that dropped the optional trigger_price field.

Common situations: Configured stop-limit strategies where the trigger offset was never resolved (e.g. based on an indicator value not yet computed), orders persisted/reloaded losing optional fields, or copy-pasted order factory calls omitting the trigger parameter.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

• Stop market orders require a trigger price
• Limit orders require a price
• Unsupported OrderType for conditional orders: {value:?}
• {FAILED}: {e}
• {FAILED}: {e}

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/10c500e7db844eee. Report an issue: GitHub.