SYSE.4:4.6 - Combine evidence only for the decision question

Some decisions depend on several evidence lines—for example, model predictions, physical tests, integration results, operating observations, and specialist arguments. Keep each direct result and evidence use visible. Combine them only through the composition or assurance rule needed by the decision question, including congruence and scope limits when B.3 is current.

Representations and automation—for example, digital twins, evidence dashboards, traceability graphs, assurance cases, test-report collections, or continuous pipelines—can help maintain these relations. Name the contribution used by the account, then establish model applicability, physical correspondence, evidence completeness, and any downstream acceptance, certification, permission, release, or target-claim use independently.