Whenever the TRACE option is in effect during a Monitor I session, you can use the tracing routines to trace the contents of any SQA, CSA, or nucleus field that you require. The EXITS option, required to generate your own reports, is not required to use the trace facilities because the trace exit, ERBTRACE, is called whenever the TRACE option is in effect.
The field that you want to trace must be fixed in CSA, SQA, or the nucleus; it cannot contain negative values; and it must be from one to four bytes in length. Once you have selected your field, there are two steps required to enable RMF™ to trace the contents of the field. After you have performed these steps, you can then specify the name in the field name portion of the TRACE option. The steps can be performed in any order, but both must be done before you can use RMF to trace the field.