nautechsystems/nautilus_trader · error

Cannot stop strategy, {strategy_id} not found

Error message

Cannot stop strategy, {strategy_id} not found

What it means

stop_strategy was called with a StrategyId that is not in the trader's registered strategy set; the strategy was never added or has already been removed, so there is no running component to stop and the call fails fast.

Source

Thrown at crates/system/src/trader.rs:1351

    /// Returns an error if the strategy is not registered or cannot be started.
    pub fn start_strategy(&self, strategy_id: &StrategyId) -> anyhow::Result<()> {
        if !self.strategy_ids.contains(strategy_id) {
            anyhow::bail!("Cannot start strategy, {strategy_id} not found");
        }
        start_component(&strategy_id.inner())
    }

    /// Stops the strategy with the given `strategy_id`.
    ///
    /// Respects the `manage_stop` behavior - if the strategy's stop function
    /// returns `false`, the component stop is deferred until market exit completes.
    ///
    /// # Errors
    ///
    /// Returns an error if the strategy is not registered or cannot be stopped.
    pub fn stop_strategy(&mut self, strategy_id: &StrategyId) -> anyhow::Result<()> {
        if !self.strategy_ids.contains(strategy_id) {
            anyhow::bail!("Cannot stop strategy, {strategy_id} not found");
        }

        let should_proceed = self
            .strategy_stop_fns
            .get_mut(strategy_id)
            .is_none_or(|stop_fn| stop_fn());

        if should_proceed {
            stop_component(&strategy_id.inner())?;
        }

        Ok(())
    }

    /// Exits the market for the strategy with the given `strategy_id`.
    ///
    /// Sends a strategy command to the strategy's control endpoint. The strategy
    /// then performs its own managed market exit.

View on GitHub (pinned to 18893faf8b)

Solutions

1. Register the strategy before stopping it
2. Verify the strategy ID against the trader's registered strategy IDs

When it happens

Trigger: Thrown at crates/system/src/trader.rs:1351 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/f72afa856efbc5b9. Report an issue: GitHub.