Processing duplicate events and modify events received from MEI

When the Message Event Interface (MEI) receives a duplicate message, the following processing occurs:

  1. The probe receives a message OPC_MSG_EVENT_DUPL_RECEIVED or OPC_MSG_EVENT_MODIFY.
  2. The probe sends a query containing the message ID received in the duplicate message to the target system.
  3. The target system sends the full message to the probe.
  4. The probe sends the message to the ObjectServer for deduplication.