---
title: "LanguageModelError.unsupportedCapability(_:)"
framework: foundationmodels
role: symbol
role_heading: Case
path: "foundationmodels/languagemodelerror/unsupportedcapability(_:)"
---

# LanguageModelError.unsupportedCapability(_:)

The model being used doesn’t support a particular feature.

## Declaration

```swift
case unsupportedCapability(LanguageModelError.UnsupportedCapability)
```

## Discussion

Discussion This failure can happen if you use capabilities like guided generation or tool calling with a model that does not support them.

## See Also

### Capability unsupported error

- [LanguageModelError.UnsupportedCapability](foundationmodels/languagemodelerror/unsupportedcapability.md)