In execution (Design, contracting, transfer) - 1 
 
 
- Design (if procurement is involved)
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- During design work 
- Project information (data) expands rapidly
 
- As design reviews progress 
- Estimate updates and schedule refinements must reflect procurement strategy
 
 
- Hence system must be able to handle
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- Budget scope changes
- Estimates during design and pre-contract award
- Escalation distribution