# validate_keys

> **Function** in `langgraph`

📖 [View in docs](https://reference.langchain.com/python/langgraph/pregel/_validate/validate_keys)

## Signature

```python
validate_keys(
    keys: str | Sequence[str] | None,
    channels: Mapping[str, Any],
) -> None
```

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/6719d34023ced81382223407c665fd0980279eea/libs/langgraph/langgraph/pregel/_validate.py#L110)