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# defaultItemIdentifiers

A required list of identifiers for items that you want to appear in the Touch Bar after instantiating it.

```
var defaultItemIdentifiers: [NSTouchBarItem.Identifier] { get set }
```

## Discussion

Always specify this property for an [`NSTouchBar`](/documentation/AppKit/NSTouchBar) object, even if you elect to make the bar noncustomizable. The system:

- Shows this list’s items by default when the system displays the bar.
- Includes a preconfigured bar, containing these items, in the associated customization UI (when you have assigned the bar a [`customizationIdentifier`](/documentation/AppKit/NSTouchBar/customizationIdentifier-swift.property) property value); the user can drag the default bar into the Touch Bar, should they want to return to the default configuration.

The system archives this property.

## See Also

[`customizationIdentifier`](/documentation/AppKit/NSTouchBar/customizationIdentifier-swift.property)

A globally unique string that makes the Touch Bar eligible for user customization.

[`customizationRequiredItemIdentifiers`](/documentation/AppKit/NSTouchBar/customizationRequiredItemIdentifiers)

An optional list of identifiers for items you want to always appear in the Touch Bar and which the user can’t remove during customization.

[`customizationAllowedItemIdentifiers`](/documentation/AppKit/NSTouchBar/customizationAllowedItemIdentifiers)

A list of identifiers for items to show in the Touch Bar’s customization UI.

[`itemIdentifiers`](/documentation/AppKit/NSTouchBar/itemIdentifiers)

The list of identifiers for the current items in the Touch Bar.


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