This job creates a report with a single trailer record containing the record count.
The COUNT subparameter of TRAILER1 provides the number of records for the entire report (all the records) starting at position 1.
REMOVECC omits the ANSI carriage control character from all of the report records.
NODETAIL generates a report with no data records, only header and trailer records, as specified.
Hope this helps. Let me know if you have any further questions.
P.S. All of this is fully documented in the SyncSort for z/OS Programmer's Guide. If you are a licensed customer but do not have access to the documentation, please contact SyncSort Mainframe Product Services and we would be happy to provide them to you.