---
title: kCMPersistentTrackID_Invalid
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmpersistenttrackid_invalid
---

# kCMPersistentTrackID_Invalid

Indicates an invalid track ID.

## Declaration

```swift
var kCMPersistentTrackID_Invalid: CMPersistentTrackID { get }
```

## See Also

### Errors

- [Sample Buffer Error Codes](coremedia/sample-buffer-errors.md)