# CFPropertyListCreateFromXMLData(_:_:_:_:) Creates a property list using the specified XML or binary property list data. ``` func CFPropertyListCreateFromXMLData(_ allocator: CFAllocator!, _ xmlData: CFData!, _ mutabilityOption: CFOptionFlags, _ errorString: UnsafeMutablePointer?>!) -> Unmanaged! ``` ## Parameters `allocator` The allocator to use to allocate memory for the new property list. Pass `NULL` or kCFAllocatorDefault to use the current default allocator. `xmlData` The raw bytes to convert into a property list. The bytes may be the content of an XML file or of a binary property list (see [`CFPropertyListFormat`](/documentation/CoreFoundation/CFPropertyListFormat)). `mutabilityOption` A constant that specifies the degree of mutability for the returned property list. See [Property List Mutability Options](/documentation/CoreFoundation/property_list_mutability_options) for descriptions of possible values. `errorString` On return, `NULL` if the conversion is successful, otherwise a string that describes the nature of the error. Error messages are not localized, but may be in the future, so they are not currently suitable for comparison. Pass `NULL` if you do not wish to receive an error string. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029) . ## Return Value A new property list if the conversion is successful, otherwise `NULL`. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029). ## Discussion > Warning: > This function is obsolete and will be deprecated soon. Use ``doc://com.apple.corefoundation/documentation/CoreFoundation/CFPropertyListCreateWithData(_:_:_:_:_:)`` instead. --- Copyright © 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)