Changes to requirements can occur at any point during the project lifecycle. This is because projects are dynamic, and various factors such as evolving stakeholder needs, market trends, technological advancements, or regulatory changes can necessitate modifications to the requirements. Business Analysts must be prepared to handle these changes effectively, ensuring that the project remains aligned with its objectives while accommodating necessary adjustments.
References: The dynamic nature of project requirements and the inevitability of changes are discussed in resources like "Managing Requirement Changes in Business Analysis" and "How do you handle changes to requirements as a Business Analyst" which explain the importance of being responsive and having strategies for managing requirement changes throughout the project lifecycle12.