The V&V results are grouped by UUID. See attached screen-shot.
These items are reported individually by kie-dmn-validation but grouped by org.kie.workbench.common.dmn.showcase.backend.validation.ValidationServiceImpl in the standalone webapp however I fear Stunner's generic ValidationService does the same in Business Central and hence reporting DMN V&V per-line may be more troublesum.
See here that should more correctly be:-
- Create a DMN file
- Add a Decision node with no content
- Validate it
- Each validation message should be a separate item in the Alert panel