Error Messages (D) A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #Duplicate Serial Number The "duplicate serial number" error message arises when two or more brokers run in conflict on the same network. In order to resolve the conflict, contact an OpenLink Account Manager and acquire the appropriate licensing. If you do not obtain this licensing, one broker will continue to shut the other broker down.Evidence Request Broker Log Request Broker Version String