> ## Documentation Index
> Fetch the complete documentation index at: https://docs.generalrobotics.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# FailedStep

> Operation metadata identifying the step that failed inside a fused block

```python theme={null}
from grid_nexus_client import FailedStep
```

Operation metadata identifying the step that failed inside a fused block.

## Fields

<ResponseField name="node_id" type="str" />

<ResponseField name="operation" type="str" />

<ResponseField name="source_line" type="int | None" default="None" />

## Constructor

```python Signature theme={null}
FailedStep(node_id: str, operation: str, source_line: int | None = None)
```


## Related topics

- [VR Teleop Guide](/simulation/isaac/teleoperation/vr-teleop-guide.md)
- [Your first session](/get-started/first-session.md)
- [Camera Calibration](/deployment/camera-calibration.md)
- [GRID Cortex Client](/models/cortex.md)
- [Environment Config](/simulation/isaac/session_configuration/env.md)