Stakeholder Communication & Lifecycle Management·Task 6.4·Bloom: evaluate·Difficulty 4/5·9 min read·Updated 2026-07-14

Diagnosing Rationale Loss in a Handoff Failure for the CCAR-P Exam

Document architectures and provide implementation guidance

SUBy Solomon UdohReviewed by Solomon UdohAI-assisted · human-reviewed
In short
Diagnosing rationale loss means tracing a production failure back to a missing decision-log row where undocumented rationale allowed a successor to reverse a load-bearing design choice. A successor acting reasonably on an incomplete document can reverse a decision that was actually load-bearing for compliance or another hard constraint. The diagnostic pattern is that the diagram survived the handoff but the rationale that made one choice non-negotiable did not, and the fix is upstream -- the missing decision-log row at design time -- not a rebuke of the successor.

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