====== P3-REQ-17-4-003 ======

[[dido:99_annexes:annex-d-requirements:part-03:start| Return to Requirements]]

===== Statement =====

Each FX logical Node Role SHALL specialise Logical Node Role from Part 2.

===== Source =====

Part 3, Section 17.4: FX Logical Node Role Requirements.

===== Rationale =====

Specializing the Part 2 Logical Node Roles preserves the architectural inheritance established by the platform-independent Logical Architecture while allowing the FX Demo Logical Profile to define Foreign Exchange-specific logical responsibilities. This ensures that domain-specific roles remain consistent with the common architectural model and support interoperability, governance, and architectural reuse.

===== Applies To =====

This requirement applies to every FX logical Node Role defined by the FX Demo Logical Profile.

It applies specifically to:

  * logical Node Role specialization;
  * architectural inheritance;
  * logical architecture reviews; and
  * profile maintenance.

===== Verification =====

Verification SHALL confirm that every FX logical Node Role explicitly identifies the corresponding Part 2 Logical Node Role from which it is specialized.

Verification activities should include review checks confirming that:

  * every FX logical Node Role has an identified parent Logical Node Role;
  * specialization relationships are documented;
  * inherited architectural meaning is preserved; and
  * no orphan logical Node Roles exist.

===== Traceability =====

This requirement preserves traceability between the Part 2 Logical Architecture and each FX logical Node Role defined by the FX Demo Logical Profile.

Related requirement identifiers:

  * [[dido:99_annexes:annex-d-requirements:part-03:p3-req-17-4-001]]
  * [[dido:99_annexes:annex-d-requirements:part-03:p3-req-17-4-002]]
  * [[dido:99_annexes:annex-d-requirements:part-03:p3-req-17-4-004]]
  * [[dido:99_annexes:annex-d-requirements:part-03:p3-req-17-4-005]]

Related source section:

  * [[fxdemo:03-part:17-fx-demo-logical-requirements:17-4-fx-logical-node-role-requirements:start]]

===== Status =====

Draft

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