When modeling processes or analyzing tasks, business rules can be uncovered by asking about:

Business rules are statements that define or constrain some aspect of the business, such as policies, standards, procedures, regulations, or constraints. Business rules can be uncovered by asking about the reasons for choosing a particular course of action when modeling processes or analyzing tasks. By asking why a certain decision is made, what criteria are used, what conditions are applied, or what consequences are expected, the business analyst can elicit the business rules that govern the behavior or outcome of the process or task. Asking about tasks that overlap with each other, work that may be performed out of sequence, or task transitions that hinder organizational performance may help to identify issues or opportunities for improvement in the process or task, but they may not reveal the business rules that underlie them. References: PMI Professional in Business Analysis (PMI-PBA)® Examination Content Outline1, page 15; Business Analysis for Practitioners: A Practice Guide2, page 95.