As an intermediate node, JES2 adds the JES2 and job scheduling sections to the end of the job header if that header does not already contain those sections.

Job Copies

JES2 sets and uses the job copies field in the job header. This field is multiplied by the copies field in the data set header to calculate the total number of copies for a data set. The $T O operator command is used to update the characteristics of data sets at a JES2 node. The 3800 characteristics is updated only if the existing data set header contains a 3800 section. JES2 does not update any data sets that have multiple “clone” copies (that is, /*JOBPARM copies or those created by a $N operator command).