Decision numbers must be numeric. This column is optional, and may be left blank. Decision Table needs more rows than just the header. The Decision Table allows you to define multiple alternatives, and automatically repeat the analysis for each alternative, generating a comparison. If you only have 1 alternative to analyze, you do not need to use a Decision Table.
Decisions can appear only once in the Tree Table Decision column.
In the Tree Table Decision column, define each alternative's starting tree node only once. E Error with user calculation routine. Some error was encountered in trying to call your custom calculation routine. Suggest debugging this interface with a simple beep command to make sure that control is passed from Risk Detective to your routine effectively. F From must be less than To for sensitivity chart.