Oracle® Database 11g / 12c / 18c error codes ORA-32823: subscriber exists for queue [string] and destination [string]

ORA-32823: subscriber exists for queue [string] and destination [string]

Oracle Error Code: ORA-32823

Cause: An attempt was made to create a propagation subscriber when one already exists for the specified queue and destination pair.

Action: Specify a different queue and destination pair, or remove the subscriber using that pair and retry the operation.