# 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`

---

[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/41341457342327166d72fc11952ab28fb61ec0bf/libs/langgraph/langgraph/errors.py#L90)