Requirements are often related to each other and there are various different ways that these relationships might exist. It is important that the business analyst identifies and analyzes these relationships clearly. 

When a relationship is identified between requirements, the business analysts will examine the relationship and ensure that it satisfies the following quality criteria:

• The relationship is defined and the relationship type is described.
• The relationship is necessary in order for the requirements to be understood in a holistic way.
• The relationship is correctly described between the requirements.
• The relationship is unambiguous in that it is clear and there is no confusion or multiple interpretations about the relationship.
• The relationship is consistent in the way that it is described between the different requirements. This means that the relationship description follows a standard or guideline as outlined in the viewpoints of the requirements architecture.

Let's now look at what the business analysis information architecture is and why it is important to consider as part of this task.