Explaining trace header information

Trace identifier: SAFTRACE Record type 54.
Record eyecatcher: Eyecatcher for the SAFTRACE record type: RTRACE.
Trace type: Identifies what trace this is. Types are OMVS for callable services, MNGR for manager calls, or RACF® for RACROUTE traces. These types are followed by PRE or POST to indicate the record pertains to a pre-function trace or post-function trace.
Ending sequence: This will contain a unique identifier in the case of the trace record exceeded the maximum size. In case of an abend during the trace, it will contain RECOVERY. Ending sequences indicate a problem occurred during trace capture. If you find these, it is indicative of a problem with the parameter list built by the caller of the function.
Calling address: Address of the caller. This is useful along with a dump of the address space when determining the caller of the service in question. It may not be possible to determine the caller of the function using the Request/Subsystem (when available).
Requestor/Subsystem: Caller's SAFPREQR and SAFPSUBS as specified on RACROUTE.
Primary jobname: Primary jobname.
Primary asid: Primary ASID.
Primary ACEEP: Primary ASID related ACEE pointer, as indicated in ASXBSENV.
Home jobname: Home Jobname.
Home asid: Home ASID.
Home ACEEP: Home ASID related ACEE pointer as indicated in the home address space ASXBSENV field.
Task address: TCB pointer of current task.
Time: Time stamp.
Error class: Possible Security product resource class name in error.
Service number: Service number for Callable service or RACROUTE. (See Table 1 and Table 2 for supported services).
RACF Return code: RACF Return Code.
RACF Reason code: RACF Reason Code.
Return area address: Address of data returned by the function. When used with a dump of an address space, storage creep problems can be isolated to the application.
Parameter count: Number of parameters that were captured. Note, this is not the number of parameters in the parmlist, but rather the number of parameters which were collected.