====== P2-REQ-16-4-002 ======

[[dido:99_annexes:annex-d-requirements:part-02:start| Return to Requirements]]

===== Statement =====

The Logical Architecture / PIM SHALL define communication roles for [[dido:99_annexes:annex-b-terms-and-definitions:p:publisher_role|Publisher Role]], [[dido:99_annexes:annex-b-terms-and-definitions:s:subscriber_role|Subscriber Role]], [[dido:99_annexes:annex-b-terms-and-definitions:r:requester_role|Requester Role]], [[dido:99_annexes:annex-b-terms-and-definitions:r:responder_role|Responder Role]], [[dido:99_annexes:annex-b-terms-and-definitions:c:command_producer_role|Command Producer Role]], [[dido:99_annexes:annex-b-terms-and-definitions:c:command_consumer_role|Command Consumer Role]], [[dido:99_annexes:annex-b-terms-and-definitions:e:event_producer_role|Event Producer Role]], and [[dido:99_annexes:annex-b-terms-and-definitions:e:event_consumer_role|Event Consumer Role]].

===== Source =====

Part 2, Section 16.4: Logical Communication Requirements.

===== Rationale =====

Communication Roles define the ways in which Logical Nodes participate in Logical Communication Endpoints. Establishing a standard set of communication roles promotes consistent interaction modeling across Domains while allowing different technologies to realize the same logical relationships.

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

This requirement applies to the Logical Communication Model.

It applies specifically to:

  * Publisher Roles;
  * Subscriber Roles;
  * Requester Roles;
  * Responder Roles;
  * Command Producer Roles;
  * Command Consumer Roles;
  * Event Producer Roles; and
  * Event Consumer Roles.

===== Verification =====

Verification SHALL confirm that the Logical Architecture defines each required Communication Role.

Verification activities should include review checks confirming that:

  * each Communication Role is explicitly defined;
  * the roles support platform-independent communication;
  * Logical Nodes participate using Communication Roles; and
  * Domain Logical Profiles preserve these role definitions.

===== Traceability =====

This requirement supports traceability between Logical Communication Endpoints, Communication Roles, and Logical Interaction Patterns.

Related requirement identifiers:

  * [[dido:99_annexes:annex-d-requirements:part-02:p2-req-16-4-001]]
  * [[dido:99_annexes:annex-d-requirements:part-02:p2-req-16-4-003]]
  * [[dido:99_annexes:annex-d-requirements:part-02:p2-req-16-7-001]]

Related source section:

  * [[fxdemo:02-part:16-logical-requirements:16-4-logical-communication-requirements:start]]

===== Status =====

Draft

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