Hi Bob,
There are some issues with the tooltips (at least up to 11.2.4). Some of them seem to appear randomly and disappear if you close and re-open the dashboard. If your error is "stable" then I would try to populate the desciption & quickinfo fields of your columns in your data module (assuming your source is a data module). In the very latest CA version though I remember that column names can be edited in the properties pane of the visualization.
Best regards
Philipp
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Philipp Hornung
Business Intelligence Manager
Techniker Krankenkasse
Hamburg Germany
#IBMChampion
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