Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
class	Photos	MBS Mac64bit Plugin	20.2	✅ Yes	❌ No	❌ No	✅ Yes	Desktop & iOS

A request to create, delete, change metadata for, or edit the content of a Photos asset, for use in a photo library change delegate.

You use the PHAssetChangeRequestMBS class to request changes for PHAssetMBS objects. To make changes to assets in the Photos library, create a change request by using the appropriate class method for the change you want to perform.

• Call one of the methods listed in Adding New Assets to create a new asset from an image or video file.
• Call the deleteAssets: method to delete existing assets.
• Call the changeRequestForAsset: method to modify an asset’s content or metadata.

A change request for creating or modifying an asset works like a mutable version of the asset object. Use the change request’s properties to request changes to the corresponding properties of the asset itself.

After Photos runs the change block and calls your completion handler, the asset’s state reflects the changes that you requested in the block.

If you create or use a change request object outside a photo library change block, Photos raises an Objective-C exception. For details on change blocks, see PHPhotoLibraryMBS.
This is an abstract class. You can't create an instance, but you can get one from various plugin functions.