# filter_complex_metadata

> **Function** in `langchain_azure_cosmosdb`

📖 [View in docs](https://reference.langchain.com/python/langchain-azure-cosmosdb/_utils/filter_complex_metadata)

Filter out metadata types that are not supported for a vector store.

## Signature

```python
filter_complex_metadata(
    documents: List[Document],
    *,
    allowed_types: Tuple[Type, ...] = (str, bool, int, float),
) -> List[Document]
```

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[View source on GitHub](https://github.com/langchain-ai/langchain-azure/blob/e62c2a55aaa0942fdac739b4066011953b80018e/libs/azure-cosmosdb/src/langchain_azure_cosmosdb/_utils.py#L182)