NetIQ Vulnerability Manager 5.5
When running delta reports some checks are grayed out and '(No Column)' is appended to the check name.
Delta reports are not returning all checks.
'(No Column)' is added to check names when running delta reports.
Running delta reports doesn't compare all checks.
Check names in delta reports have '(No Column)' added to them.
There is no data to compare.
Delta reporting compares data from two runs of the same report. If either or both runs of the report do not contain actual data to compare, in the report, the check is grayed out with '(No Column)' appended to the check name.
You can open the individual checks in either or both runs of the report to determine if the report run contains no data.