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# needsDisambiguationError(among:dialog:)

Returns a `restartPerform` error with context for the user to disambiguate amongst an array
of values from for this parameter and re-perform the intent with the new value.

```
func needsDisambiguationError(among itemsToDisambiguate: [Value.ValueType], dialog: IntentDialog? = nil) -> AppIntentError
```

## Parameters

`itemsToDisambiguate`

the list of items to be presented to the user for disambiguation

`dialog`

a custom dialog that may be used when prompting the user for the value

## Return Value

an error that should be thrown within the intent `perform()` method.

---

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