• Home
• Error Catalog
• Controller Configuration Errors
• Error: Publisher ID must be unique

Error: Publisher ID must be unique

In the configuration of the OPC UA PubSub communication, multiple connections with the same Publisher ID are defined. These IDs must be unique within a configuration.

Using the combination of Writer ID, Writer group ID and Publisher ID, a subscriber identifies the publisher from which to read data.

Remedy

Define unique Ids for each affected connection.

Example