P4-REQ-21-9-007

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Each QoS profile mapping SHALL identify the expected history behavior.

Part 4, Section 21.9: QoS Profile Requirements.

History behavior determines how much communication history is retained for applicable DDS exchanges.

Explicit history expectations allow Phase 0 to retain sufficient information for downstream consumption, review, troubleshooting, or demonstration without making the behavior implicit.

This requirement applies to:

• QoS profile mappings;
• applicable DDS Topics;
• publishers and subscribers; and
• communication history configuration.

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

Verification activities should include review checks confirming that:

• the selected history expectation is stated;
• retained history supports the intended communication purpose;
• history settings are compatible with participating implementations; and
• configuration is governed by the Phase 0 baseline.

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

Related requirement identifiers:

• P4-REQ-21-9-006
• P4-REQ-21-9-008

Related source section:

• 21.9 QoS Profile Requirements

Draft