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• OPC-10000-21 – OPC Unified Architecture - Part 21: Device Onboarding
  3.1.9 Device Configuration Application (DCA)
  which is a Client uses PullManagement (see 7.2 ) to interact with the Registrar. Note 2 to entry: the Registrar uses PushManagement (see 7.3 ) to interact with a DCA which