SYSE.18:4 - Solution
Recover the constituent arrangement from the shared use, make distributed decisions and dependencies explicit, and choose one bounded coordination alternative within the deciding Agent’s authority.
SYSE.18:4.1 - Perform the Move
- Name the shared use and decision. State the result, use interval, conditions, constituent Systems, and the Agent authorized to make the current integration decision.
- Identify actual constituent Systems by consequence. Include a System only when a stated consequence of its condition or behavior—for example, participation, a supplied result, failure, change, or withdrawal—can alter the shared use. Keep a future candidate as an intended System referent in plan or decision content until it exists and can be recognized.
- State the relied-on relation. For each constituent, say in ordinary language how its behavior, state, result, or availability changes the shared use. Then apply the pattern that governs the actual relation—for example, a transformation, performed Work, commitment, capability, transfer, interface, availability, or evidence relation. Use a separate predicate for each unlike claim.
- Recover decisions and authority. For every choice that can alter the use, identify the deciding Agent, assignment when relevant, direct authority or permission, conflict, and escalation. Compare the actual decision centres and feedback; neither centralization nor decentralization is beneficial by label.
- Check commitments, interfaces, configurations, and evidence. Record each commitment, later Work, delivered result, interface description, actual exchange, and fulfilment evidence as its own claim. State the relevant conditions used by the decision—for example, notice, withdrawal, capacity, timing, recovery, or currentness.
- Generate feasible coordination alternatives. Consider alternatives such as retaining the arrangement, changing an interface or commitment, adding a mediating System, buffer, or fallback, replacing a constituent for this use, narrowing the use, or stopping. Preserve alternatives that require decisions from different Agents.
- Choose within actual authority. Record the selected alternative, deciding Agent, authority, accepted losses, decisions still required elsewhere, unsupported dependencies, authorized next Work, and any evidence still needed for reliance on the selected arrangement.
- Perform and observe only when authorized. If integration Work occurs, identify the performing Agent, Method, dated Work, actual transformation or newly obtaining relation, resulting configuration, and evidence. Use a representative occurrence to support only the coordination claim actually observed.
The numbered presentation is an A.22.CGUS learning unfolding, not a required sequence for constituent Work.
Constituent operation, engineering, governance, and integration can be simultaneous; only stated dependencies and
temporal relations establish order.
SYSE.18:4.2 - Record the Result
| Field | Required content |
|---|---|
| shared use | Result or use, conditions, interval, affected Systems, current decision, and deciding Agent. |
| constituent Systems and relations | Actual Systems, configurations, other uses, reasons for inclusion, and one direct relation or stated gap for every relied-on contribution or constraint. |
| decisions and authority | Ownership and other governing relations, deciding Agents, assignments when relevant, authority, permissions, conflicts, escalation, and decision-centre boundaries. |
| commitments and interoperability | Commitments with bearers and conditions; interfaces, capacities, timings, actual exchange or use evidence, notice, withdrawal, and failure-recovery conditions. |
| alternatives and choice | Considered feasible coordination alternatives; selected alternative and selection basis; deciding authority, accepted losses, outside decisions, unsupported dependencies, and next Work. |
| later integration, when current | Performing Agent, Method, dated Work, actual change or newly obtaining relation, resulting configuration, representative observation, and evidence limits. |
| decision use and reopen | Decision contribution supplied to next Work; separately supported observed-coordination claim when available; fallback, gaps, and conditions for reopening each affected claim. |
The first useful decision does not wait for implementation. Identify the earlier decision, performed Work, and later observed-coordination claim separately. An observed coordination result does not establish that every constituent commitment was fulfilled.
SYSE.18:4.3 - What Changes in Practice
Engineers stop using system of systems as an explanation. They can name which Systems matter, what each Agent can decide, what the integration Agent can change, which dependencies remain unsupported, and what observation is needed before the shared use may rely on the changed arrangement.