P4-REQ-21-8-011

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Each interaction realization SHALL preserve traceability to the Part 3 FX logical interaction pattern.

Part 4, Section 21.8: Interaction Pattern Realization Requirements.

Each Phase 0 interaction realization must remain connected to the logical interaction pattern that defines its architectural purpose.

Preserving this relationship allows reviewers to determine why an implementation flow exists, whether its behavior is consistent with Part 3, and whether subsequent changes preserve logical meaning.

This requirement applies to:

• Phase 0 interaction realizations;
• FX logical interaction patterns;
• implementation mapping records;
• scripts and configuration metadata; and
• implementation traceability records.

Verification SHALL confirm that every interaction realization preserves traceability to its applicable Part 3 FX logical interaction pattern.

Verification activities should include review checks confirming that:

• the applicable Part 3 interaction is identifiable;
• mapping records connect implementation behavior to its logical source;
• changes preserve or explicitly update the traceability relationship; and
• reviewers can navigate from implementation flow to Part 3 interaction definition.

This requirement establishes backward traceability from Phase 0 interaction realizations to their authoritative Part 3 FX logical interaction patterns.

Related requirement identifiers:

• P4-REQ-21-8-001
• P4-REQ-21-8-002
• P4-REQ-21-8-010
• P4-REQ-21-8-012

Related source section:

• 21.8 Interaction Pattern Realization Requirements

Draft