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# OSSystemExtensionRequest.ReplacementAction

Actions for describing how the extension manager should resolve a version conflict.

```
enum ReplacementAction
```

## Topics

### Replacement Actions

[`OSSystemExtensionRequest.ReplacementAction.cancel`](/documentation/SystemExtensions/OSSystemExtensionRequest/ReplacementAction/cancel)

An action that tells the manager to cancel replacement of a system extension.

[`OSSystemExtensionRequest.ReplacementAction.replace`](/documentation/SystemExtensions/OSSystemExtensionRequest/ReplacementAction/replace)

An action that tells the manager to replace an existing system extension.


---

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