The MQ Administration Guide on enhanced cluster max. clusterid length (value for imq.cluster.clusterid) is not correct
"no more than n-13 characters, where n is the maximum table name length allowed by the database"
"no more than n-18 characters, where n is the maximum table name length allowed by the database"
Similar max. length restriction, n-16, need to be documented for conventional cluster of peer brokers, which uses a shared JDBC store for the cluster's configuration change record.