<!--
{
  "availability" : [
    "macOS: 26.0.0 -",
    "visionOS: 26.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CompositorServices",
  "identifier" : "/documentation/CompositorServices/cp_tracking_area_identifier_invalid",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "Compositor Services"
    ],
    "preciseIdentifier" : "c:@cp_tracking_area_identifier_invalid"
  },
  "title" : "cp_tracking_area_identifier_invalid"
}
-->

# cp_tracking_area_identifier_invalid

Identifier reserved as invalid.

```
static const cp_tracking_area_identifier cp_tracking_area_identifier_invalid;
```

## Discussion

Should not be used as identifier for [`addTrackingArea(identifier:)`](/documentation/CompositorServices/LayerRenderer/Drawable/addTrackingArea(identifier:)).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)