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OPC UA PubSub Configuration Error (PLCN0043): '...': The id must not have the value '...'.

The configuration elements of the OPC UA PubSub communication, such as connections (Publisher ID), writer groups and writers have a numerical ID. Using the combination of these IDs, a subscriber identifies the publisher from which to read data.
These IDs must have a value > 0.

Remedy

  1. Double-click the error message to jump to the corresponding editor.
  2. Correct the affected ID by entering a ID value > 0 that is unique within the configuration.