A namelist is a WebSphere MQ object that contains a list of cluster names, queue names or AUTHINFO object names. In a cluster, it can be used to identify a list of clusters for which the queue manager holds the repositories.
You can only define and modify namelists using the operations and control panels of WebSphere MQ for z/OS or MQSC commands.
Programs can use the MQI to find out which queues are included in these namelists. The organization of the namelists is the responsibility of the application designer and system administrator.
For a full description of the attributes of namelists, see WebSphere MQ Application Programming Reference.