# InvalidUpdateError

> **Class** in `langgraph`

📖 [View in docs](https://reference.langchain.com/python/langgraph/errors/InvalidUpdateError)

Raised when attempting to update a channel with an invalid set of updates.

Troubleshooting guides:

- [`INVALID_CONCURRENT_GRAPH_UPDATE`](https://docs.langchain.com/oss/python/langgraph/INVALID_CONCURRENT_GRAPH_UPDATE)
- [`INVALID_GRAPH_NODE_RETURN_VALUE`](https://docs.langchain.com/oss/python/langgraph/INVALID_GRAPH_NODE_RETURN_VALUE)

## Signature

```python
InvalidUpdateError()
```

## Extends

- `Exception`

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/d27d4b2d9895a4aa83170b4aaa135878f99c7fd6/libs/langgraph/langgraph/errors.py#L68)