P4-REQ-21-4-010

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The Phase 0 Implementation Profile / PSM SHALL allow more than one implementation artefact to realise one FX logical Node when the mapping records that choice.

Part 4, Section 21.4: Logical Node Mapping Requirements.

An FX logical Node may require more than one implementation artefact to realize its responsibilities in the selected Phase 0 implementation context.

Allowing this mapping preserves implementation flexibility while ensuring that distributed implementation responsibility remains traceable to a single authoritative logical Node definition.

This requirement applies to:

• FX logical Nodes;
• implementation node artefacts;
• distributed implementation mappings;
• supporting modules; and
• node traceability records.

Verification SHALL confirm that multiple implementation artefacts may realize one FX logical Node when the mapping is explicitly recorded.

Verification activities should include review checks confirming that:

• every contributing implementation artefact is identified;
• allocated Node responsibilities are documented;
• all applicable artefacts trace to the same authoritative Node definition; and
• implementation decomposition does not create conflicting logical Node definitions.

This requirement preserves the distinction between a logical Node definition and the number of implementation artefacts used to realize it.

Related requirement identifiers:

• P4-REQ-21-4-003
• P4-REQ-21-4-009
• P4-REQ-21-4-011

Related source section:

• 21.4 Logical Node Mapping Requirements

Draft