Coherence matters more than document count

A large file can still be weak. Auditors need to understand what was intended, how risk was controlled, what was built, how it was evaluated and who approved the resulting decisions.

  • Approved lifecycle and development plans
  • Controlled user needs and design inputs
  • Architecture and design outputs
  • Risk-management records
  • Review, verification and validation evidence
  • Configuration, anomaly and change records
  • Transfer and release decisions

Use readiness gates

Each lifecycle gate should define the information needed to proceed, responsible decision-makers, open-issue treatment and objective evidence of approval. This prevents unresolved design-input problems from quietly becoming test or submission problems.

Test the story before the auditor does

Select important user needs and significant risks, then trace them forward through requirements, implementation, verification, validation and residual-risk evaluation. Reverse tracing from tests and controls can reveal orphaned evidence or undocumented decisions.

Key takeaways

  • A design history file should communicate a coherent development argument.
  • Readiness is built through lifecycle gates, not document collection.
  • Forward and reverse traceability are powerful audit-preparation tools.
This article provides general educational information. Applicable requirements depend on the device, jurisdiction, lifecycle stage and current regulatory position.