P4-REQ-21-9-006

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Each QoS profile mapping SHALL identify the expected durability behavior.

Part 4, Section 21.9: QoS Profile Requirements.

Durability behavior determines whether and how previously published information remains available to later-joining participants.

Making this expectation explicit supports consistent Phase 0 review of late-joining behavior, replay-oriented review, status availability, and other communication needs.

This requirement applies to:

• QoS profile mappings;
• DDS publishers;
• DDS subscribers; and
• applicable Topic exchanges.

Verification SHALL confirm that each QoS profile mapping identifies its expected durability behavior.

Verification activities should include review checks confirming that:

• the selected durability expectation is stated;
• the behavior supports the applicable communication purpose;
• publisher and subscriber settings are compatible; and
• the selected behavior is documented in the Phase 0 baseline.

This requirement establishes the durability expectation associated with each Phase 0 QoS profile mapping.

Related requirement identifiers:

• P4-REQ-21-9-004
• P4-REQ-21-9-007
• P4-REQ-21-9-010

Related source section:

• 21.9 QoS Profile Requirements

Draft