====== P4-REQ-21-4-011 ======

[[dido:99_annexes:annex-d-requirements:part-04:start| Return to Requirements]]

===== Statement =====

Runtime packaging SHALL NOT redefine FX logical Nodes or FX logical Node Roles.

===== Source =====

Part 4, Section 21.4: Logical Node Mapping Requirements.

===== Rationale =====

Runtime packaging determines how logical responsibilities are grouped into implementation processes, modules, or other runtime participants. It is an implementation decision rather than a logical architectural definition.

Preventing runtime packaging from redefining Nodes or Node Roles preserves the authority of the Part 3 FX Demo Logical Profile and allows implementation packaging to change without altering logical meaning.

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

This requirement applies to:

  * runtime processes;
  * implementation modules;
  * runtime participants;
  * implementation node mappings; and
  * process or service packaging decisions.

===== Verification =====

Verification SHALL confirm that runtime packaging does not redefine FX logical Nodes or FX logical Node Roles.

Verification activities should include review checks confirming that:

  * runtime process boundaries are treated as implementation boundaries;
  * logical Node definitions remain governed by Part 3;
  * Node Roles remain unchanged by packaging decisions;
  * one-to-many and many-to-one implementation mappings remain explicit; and
  * changes in runtime packaging do not silently change logical responsibilities.

===== Traceability =====

This requirement preserves separation between the logical Node architecture defined in Part 3 and the runtime packaging selected by the Phase 0 Implementation Profile / PSM.

Related requirement identifiers:

  * [[dido:99_annexes:annex-d-requirements:part-04:p4-req-21-4-009]]
  * [[dido:99_annexes:annex-d-requirements:part-04:p4-req-21-4-010]]
  * [[dido:99_annexes:annex-d-requirements:part-04:p4-req-21-2-004]]

Related source section:

  * [[fxdemo:04-part:21-phase-0-implementation-requirements:21-4-logical-node-mapping-requirements:start]]

===== Status =====

Draft

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