Oracle® Database 11g / 12c / 18c error codes ORA-32815: message system link [string] is referenced by a foreign queue

ORA-32815: message system link [string] is referenced by a foreign queue

Oracle Error Code: ORA-32815

Cause: An attempt was made to remove a message system link currently referenced by one or more registered foreign queues.

Action: Unregister all foreign queues using this message system link and retry the operation.