Do not use the RMF distribution table library as your ISPF output library (ERBTAB); you could destroy standard RMF report formats as a result. Allocate ERBTAB as part of a private user table library. You can concatenate this private library to the beginning of the RMF input table library (ERBTLIB) and can safely delete the ISPF tables you have modified or created (ERBPHDS3, ERBFMTS3, and ERBPTGS3) for your own reports.
This CLIST is available in SYS1.SERBCLS, which must be concatenated to your SYSPROC library.