For the purposes of the BABOK® Guide, the following classification schema describes requirements

The purpose of Plan Stakeholder Engagement is to plan an approach for establishing and maintaining effective working relationships with the stakeholders.

The purpose of Plan Business Analysis Information Management is to develop an approach for how business analysis information will be stored and accessed.

The purpose of Recommend Actions to Increase Solution Value is to understand the factors that create differences between potential value and actual value, and to recommend a course of action to

An interview is a systematic approach designed to elicit business analysis information from a person or group of people by talking to the interviewee(s), asking relevant questions, and

A business case provides a justification for a course of action based on the benefits to be realized by using the proposed solution, as compared to the cost, effort, and other considerations to

Data flow diagrams show where data comes from, which activities process the data, and if the output results are stored or utilized by another activity or external entity.

Item tracking is used to capture and assign responsibility for issues and stakeholder concerns that pose an impact to the solution.

Benchmarking and market analysis are conducted to improve organizational operations, increase customer satisfaction, and increase value to stakeholders.

A concept model is used to organize the business vocabulary needed to consistently and thoroughly communicate the knowledge of a domain.