Knowledge Requirement in DMN (Decision Model and Notation) refers to the concept of specifying the knowledge required to make a decision within a business process. This can include the expertise, skills, or experience that is needed to support the decision-making process, as well as the sources of that knowledge.
For example, a line might connect a decision to an expert system to represent how the decision relies on expertise from that system. Similarly, a line might connect a decision tree to a decision to represent how the decision relies on a structured approach to decision-making.