ThingWorx Edge C SDK > Steps for Setting Up Applications > Implementing a Synchronized State Handler
  
Implementing a Synchronized State Handler
As of version 1.4.0, the C SDK provides the ability to install handlers that notify you when getPropertySubscriptions() is being called on ThingWorx platform in response to a notifyPropertyUpdates message. This mechanism works in a similar manner to the bind event handler.
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Consider the Synchronized State event handler as a best practice for edge applications.