====== 5.3 Traceability Before Code ======

[[fxdemo:04-part:05-phase-0-implementation-principles:start | Go To Phase 0 Implementation Principles ]]

[[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] precedes coding.

Each Phase 0 implementation artifact must trace to the logical element or implementation concern it realizes or supports. A source file, generated file, [[dido:99_annexes:annex-b-terms-and-definitions:i:idl|IDL]] file, [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] Topic definition, Quality of Service (QoS) profile, script, configuration file, or implementation module must identify its architectural role and, where applicable, its relationship to the applicable FX logical element.

This principle prevents isolated code from being added to the repository without an architectural context. It also supports later deployment, testability, observation, audit, provenance, replay, reconstruction, and [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|evidence]] planning.

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