Diagnosis
In order for the system to be able to store rules of the form "Item A ->Item B" in the Rule-Cube, you must specify which characteristic occupiesthe role of Item A and which characteristic occupies the role ofItem B. For characteristic Item B, however, this is notthe case.

System Response
No analysis is possible.

Procedure
Specify which characteristic of the Rule-Cube is to be seen as aconclusion of the rules. Note that this characteristic must becompatible with the characteristic Item / Premiss of the Rules.