Decision tables errors and warnings

Decision Designer checks for overlaps and gaps in decision table conditions, and indicates problems using visual cues.

As you submit values to the cells of your decision table, Decision Designer checks the column automatically for errors. You can disable gaps and overlaps check from the column menu.

Overlap checks

Decision Designer can verify that the values you enter for a given condition throughout the different rows do not overlap or are not identical.

For example, consider a column for the age of the customer:
  • Row 1: age is between 17 and 30
  • Row 2: age is between 29 and 40

In this example, customers that are 29 years old satisfy the condition of both rows. Decision Designer reports this as an overlap warning.

Decision Designer checks for overlaps for all the entries in a column, and within partitioned groups of cells.

Gap checks

Decision Designer can verify that the cells in a condition column consider all possible cases, which helps you make sure there are no gaps in your tables.

For example, consider a column for the age of the customer:
  • Row 1: age is between 17 and 30
  • Row 2: age is between 32 and 40

In this example, customers that are 31 years old are never be taken into account. Decision Designer reports this as a gap warning.

Decision Designer evaluates gaps for all the entries in a column, and within partitioned groups of cells.