The parameter, LISTFIL, needs to be changed to 'Y' via the JOB06OP2 JCL member in the CBAAJCL library.
Here is the link to the documentation: Updating-the-LISTFIL-parameter
LISTFIL specifies whether CA Easytrieve® Report Generator produces file statistics at the completion of each activity during execution. The statistics are written to STDERR. You can override this value with PARM LIST FILE per program. Y Produces the statistics. N Suppresses the statistics. This is the default.