Business analysts will determine the formality of the assessment process based on the information available, the apparent importance of the change, and the governance process. Many proposed changes may be withdrawn from consideration or declined before any formal approval is required. A predictive approach may indicate a more formal assessment of proposed changes.

Derive: relationship between two requirements, used when a requirement is derived from another requirement. This type of relationship is appropriate to link the requirements on different levels of abstraction. For example, a solution requirement derived from a business or a stakeholder requirement.