When you follow the getting started steps in "Getting started with decision services in Red Hat Decision Manager", after finishing the model development (3.4. Defining the traffic violations DMN decision logic) and build the project, you will get one warning "Columns: [Violation.Type] relate to FEEL string values which can be enumerated for the inputs; Gap analysis skipped." See attached validation-type-warn.png

https://access.redhat.com/documentation/en-us/red_hat_decision_manager/7.9/html-single/getting_started_with_red_hat_decision_manager/index#dmn-gs-defining-decision-logic-proc

Solution A) Add a note to ignore the warning.

Solution B) Improve the steps to make use of Gap analysis. (Add enumeration constraints in properties pane. We will see another waning that there is a gap [< 10, "speed"] then... add a row with amount=0, points=0? or ignore it because we don't fine the case)