The items in a subscribed library have features that are distinct from the items in a local library. Synchronizing the content and the metadata of an item in a subscribed library depends on the synchronization mechanism of the subscribed library.

Table 1. Options for Synchronizing a Library Item
Synchronization Type of the Subscribed Library Description
Synchronized on demand If the subscribed library is synchronized on demand, you can use the sync method on the SubscribedItem service and pass as arguments the library item ID and true. When you perform the task, both the item metadata and the content are synchronized. To synchronize only the metadata of the item, pass the library ID and false as arguments to the method.
Not synchronized on demand If the subscribed library is not synchronized on demand, you can use the sync method on the SubscribedItem service and pass as argument the item ID. In this case, the content of the item is always synchronized and the Boolean value is ignored when the call is executed.
Synchronized automatically If the subscribed library is synchronized automatically, you can also use the sync method to force the synchronization of an item. Method execution depends on whether the subscribed library is synchronized on demand.