dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-02-node-requirements:nod-004-control-the-node-lifecycle:nod-004a-establish-the-initial-node-state

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dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-02-node-requirements:nod-004-control-the-node-lifecycle:nod-004a-establish-the-initial-node-state [2026/08/17 14:20] – removed - external edit (Unknown date) 127.0.0.1dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-02-node-requirements:nod-004-control-the-node-lifecycle:nod-004a-establish-the-initial-node-state [2026/08/17 14:20] (current) – ↷ Links adapted because of a move operation nick_dido
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 +====== NOD-004a — Establish the Initial Node State ======
  
 +[[dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-02-node-requirements:nod-004-control-the-node-lifecycle:start|Go to NOD-004 — Control the Node Lifecycle]]
 +
 +===== Statement =====
 +
 +The [[dido:99_annexes:annex-b-terms-and-definitions:d:dido-te|DIDO-TE]] SHALL establish the initial state of each [[dido:99_annexes:annex-b-terms-and-definitions:n:node|Node]] before initiating a Node lifecycle transition.
 +
 +===== Derived From =====
 +
 +  * [[dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-02-node-requirements:nod-004-control-the-node-lifecycle:start|NOD-004 — Control the Node Lifecycle]]
 +  * [[dido:03-dido-te:99-annexes:annex-b-references:dte-005|[DTE5] DIDO-TE Requirements Register]], source requirement identifier and obligation to be assigned
 +  * [[dido:03-dido-te:99-annexes:annex-b-references:dte-006|[DTE6] Structured Information Processing Reference Architecture (SIP-RA)]]
 +  * [[dido:03-dido-te:99-annexes:annex-b-references:dte-007|[DTE7] Federated Data Interpretation Systems Reference Architecture (FDIS-RA)]]
 +
 +===== Rationale =====
 +
 +The initial Node state provides the controlled starting point for subsequent lifecycle operations. It identifies the actual condition of the Node before the DIDO-TE starts, activates, suspends, resumes, stops, restarts, recovers, or terminates it.
 +
 +The applicable [[dido:99_annexes:annex-b-terms-and-definitions:n:node_definition|Node Definition]], [[dido:99_annexes:annex-b-terms-and-definitions:n:node_implementation|Node Implementation]], and [[dido:99_annexes:annex-b-terms-and-definitions:n:node_configuration|Node Configuration]] determine the permitted initial states and the criteria for establishing them.
 +
 +An unknown, ambiguous, unauthorized, or unsuitable initial state prevents the DIDO-TE from determining whether a requested lifecycle transition is valid. Residual processes, data, connections, locks, resources, or configuration from an earlier operation may also affect subsequent [[dido:99_annexes:annex-b-terms-and-definitions:t:test_execution|Test Execution]].
 +
 +Establishing and recording the initial state supports lifecycle control, reproducibility, fault isolation, recovery, [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]], and [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]].
 +
 +===== Applies To =====
 +
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:d:dido-te|DIDO-TE]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:n:node|Node]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:n:node_definition|Node Definition]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:n:node_implementation|Node Implementation]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:n:node_configuration|Node Configuration]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:t:test_definition|Test Definition]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:t:test_environment|Test Environment]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:t:test_execution|Test Execution]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]]
 +  * [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]]
 +
 +===== Verification =====
 +
 +Verification confirms that:
 +
 +  * The DIDO-TE uniquely identifies the Node before establishing its initial state.
 +  * The Node Definition or Node Implementation identifies the permitted initial states.
 +  * The DIDO-TE uses identified and authorized criteria and procedures to determine the initial Node state.
 +  * The DIDO-TE observes the actual Node state rather than relying solely on an intended or previously recorded state.
 +  * The DIDO-TE identifies active processes, services, connections, bindings, resources, and applicable persistent data associated with the Node.
 +  * The DIDO-TE identifies residual Node activity or state from an earlier operation.
 +  * The DIDO-TE confirms that the initial Node state satisfies the applicable Node Definition, Node Implementation, Node Configuration, Test Definition, and Test Environment constraints.
 +  * The DIDO-TE detects an unknown, ambiguous, conflicting, unauthorized, or unsuitable initial Node state.
 +  * The DIDO-TE prevents a lifecycle transition when the initial Node state does not satisfy the transition preconditions.
 +  * The DIDO-TE identifies the corrective or recovery action required when the initial Node state is unsuitable.
 +  * The DIDO-TE records the Node identity, observed state, applicable criteria, procedure, authority, time, findings, exceptions, and resulting status.
 +  * Repeated determination of an unchanged initial Node state under equivalent conditions produces an equivalent result.
 +  * The DIDO-TE maintains Traceability among the Node Definition, Node Implementation, Node Configuration, Test Definition, Test Environment, observed initial state, findings, exceptions, and resulting Evidence.
 +  * An unknown, ambiguous, unauthorized, unsuitable, incorrectly determined, or untraceable initial Node state constitutes nonconformance with this requirement.
 +
 +Verification includes:
 +
 +  * Inspection of the Node identity
 +  * Inspection of permitted initial states and transition preconditions
 +  * Inspection of the authorized state-determination criteria and procedure
 +  * Observation of the actual Node state
 +  * Inspection of active processes, services, connections, bindings, resources, and persistent data
 +  * A negative assessment involving an unknown initial state
 +  * A negative assessment involving residual activity from an earlier operation
 +  * Confirmation that an unsuitable initial state prevents a lifecycle transition
 +  * Inspection of findings, exceptions, recovery actions, Evidence, and Traceability
 +
 +===== Referenced By =====
 +
 +{{backlinks>.}}
 +
 +===== Related Architecture Sections =====
 +
 +  * Add links to the architecture sections governing Node lifecycle states, lifecycle transitions, Node Configuration, Test Environment control, recovery, Evidence, and Traceability.
 +
 +===== Delivery Phase =====
 +
 +<todo>Assign the applicable delivery phase.</todo>
 +
 +===== Requirement Status =====
 +
 +Draft
 +
 +===== Statement Reference =====
 +
 +Use the following syntax to reference this requirement’s Statement section from another DokuWiki page:
 +
 +<code dokuwiki>
 +{{section>dido:03-dido-te:99-annexes:annex-c-requirements:03-node-requirements:nod-004-control-the-node-lifecycle:nod-004a-establish-the-initial-node-state#Statement&noheader&nofooter&noeditbtn}}
 +</code>
 +
 +----
 +
 +<WRAP centeralign>
 +© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +</WRAP>