Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
class	CloudKit	MBS Mac64bit Plugin	16.5	✅ Yes	❌ No	❌ No	✅ Yes	All

A CKModifySubscriptionsOperation object saves changes to one or more CKSubscription objects.

After creating or changing the configuration of a subscription object, use this type of operation object to save those changes to an iCloud container. You also use instances of this class to delete subscriptions permanently from a database.

The complete event is called after the operation executes and returns its results to you. You can use a completion event to perform housekeeping chores related to the operation, but do not use it to process the results of the operation itself. Any completion event you specify should be prepared to handle the failure of the operation to complete its task, whether due to an error or an explicit cancellation.

Available in macOS 10.10 and newer in 64-bit applications.
Subclass of the CKDatabaseOperationMBS class.