You are leading a hybrid project where the design phase follows a predictive approach with fixed milestones, while implementation uses iterative delivery. During the third implementation iteration, the team discovers that a design assumption documented in the approved design specification is technically infeasible. Implementing the original design would require significant rework. The design phase gate was formally closed two months ago. How should you proceed?

Question

Accepted Answer

The correct answer is A. In a hybrid environment, changes to predictive phase deliverables require formal change control even when discovered during adaptive phases. The design specification is a baselined document that affects project scope, schedule, and potentially cost, requiring proper impact analysis and stakeholder approval through change control processes. Option B is the main distractor because while the implementation is iterative, it must still align with approved design specifications from the predictive phase; allowing uncontrolled design changes undermines the hybrid governance structure. Option C unnecessarily escalates what should be handled through established change processes, and Option D implements an unauthorized change that may have downstream impacts.

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