The empty transaction groups report gives all basic transaction
groups (Trangroups) that were defined, but contained no transactions.
It is produced only if the input data sets have no errors. An empty
Trangroup probably indicates that you have made a mistake. The Reporter
cannot produce empty Trangroups, so you must have created the input
by hand, and probably omitted some corresponding CREATE DTRINGRP statements. Figure 1. Example empty Trangroups report