nautechsystems/nautilus_trader · error

RPC ticks do not match the complete HyperSync topology: expe

Error message

RPC ticks do not match the complete HyperSync topology: expected {} ticks, received {}

What it means

Topology validation in validate_rpc_snapshot_topology: the set of ticks in the RPC snapshot must exactly match the active ticks derived from HyperSync profiler data; a count mismatch means the RPC node and HyperSync disagree on the pool's tick set.

Source

Thrown at crates/adapters/blockchain/src/data/core.rs:2132

                "RPC positions do not match the complete HyperSync topology: expected {} positions, received {}",
                expected_positions.len(),
                actual_positions.len()
            );
        }

        let actual_ticks: AHashMap<_, _> = snapshot
            .ticks
            .iter()
            .map(|tick| (tick.value, tick))
            .collect();

        if actual_ticks.len() != snapshot.ticks.len() {
            anyhow::bail!("RPC snapshot contains duplicate ticks");
        }

        let expected_tick_values = profiler.get_active_tick_values();
        if actual_ticks.len() != expected_tick_values.len() {
            anyhow::bail!(
                "RPC ticks do not match the complete HyperSync topology: expected {} ticks, received {}",
                expected_tick_values.len(),
                actual_ticks.len()
            );
        }

        for tick_value in expected_tick_values {
            let expected_tick = profiler
                .get_tick(tick_value)
                .with_context(|| format!("missing replay tick {tick_value}"))?;
            let actual_tick = actual_ticks
                .get(&tick_value)
                .with_context(|| format!("RPC snapshot omitted tick {tick_value}"))?;

            if !actual_tick.initialized
                || actual_tick.liquidity_gross == 0
                || actual_tick.liquidity_gross != expected_tick.liquidity_gross
                || actual_tick.liquidity_net != expected_tick.liquidity_net

View on GitHub (pinned to 18893faf8b)

Solutions

1. Re-fetch the RPC snapshot in case of a transient node inconsistency
2. Verify the RPC endpoint tracks the same chain/fork as HyperSync
3. Re-sync HyperSync data so profiler and RPC agree

When it happens

Trigger: Thrown at crates/adapters/blockchain/src/data/core.rs:2132 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/2f31f43c3d060807. Report an issue: GitHub.