DMN12 — Decision Table hit policies C and C# should not return null when there are no matches

In DMN, null seems to be used mostly to indicate absence of a value or the presence of an error.

When using the Decision Table hit policies C and C#, failure to match rules in the decision table does not mean either. In such cases, the most appropriate and expected result should be:

• for hit policy C: an empty list
• for hit policy C#: the value 0

hit policies C and C# do not return null when there are no matches

See attached Word file