In SAS Intelligent Decisioning, one of the ways that you can test your decision is by using a scenario test. A scenario test enables you to enter specific input values and the output values that you expect the test to generate.
The Analysis and Plot under Decision Path Tracking for your scenario test fails with an error under the following conditions:
Here is a screenshot of the error that occurs:

This issue occurs only with scenario tests.
To circumvent the issue, remove the forward slash (/) from the Branch node's Alternate label field and save the decision.