---
title: kCFPropertyListReadUnknownVersionError
framework: corefoundation
role: symbol
role_heading: Global Variable
path: corefoundation/kcfpropertylistreadunknownversionerror
---

# kCFPropertyListReadUnknownVersionError

Signifies the version number in the property list is unknown.

## Declaration

```swift
var kCFPropertyListReadUnknownVersionError: CFIndex { get }
```

## See Also

### Constants

- [kCFPropertyListReadCorruptError](corefoundation/kcfpropertylistreadcorrupterror.md)
- [kCFPropertyListReadStreamError](corefoundation/kcfpropertylistreadstreamerror.md)
- [kCFPropertyListWriteStreamError](corefoundation/kcfpropertylistwritestreamerror.md)