P4-REQ-21-4-010
Statement
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.
Source
Part 4, Section 21.4: Logical Node Mapping Requirements.
Rationale
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.
Applies To
This requirement applies to:
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FX logical Nodes;
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implementation node artefacts;
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distributed implementation mappings;
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supporting modules; and
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node traceability records.
Verification
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:
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every contributing implementation artefact is identified;
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allocated Node responsibilities are documented;
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all applicable artefacts trace to the same authoritative Node definition; and
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implementation decomposition does not create conflicting logical Node definitions.
Traceability
This requirement preserves the distinction between a logical Node definition and the number of implementation artefacts used to realize it.
Related requirement identifiers:
Related source section:
Status
Draft
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