====== P4-REQ-21-12-001 ======

[[dido:99_annexes:annex-d-requirements:part-04:start| Return to Requirements]]

===== Statement =====

The Phase 0 Implementation Profile / PSM SHALL define a Script and Execution Model.

===== Source =====

Part 4, Section 21.12: Script and Execution Requirements.

===== Rationale =====

A defined Script and Execution Model establishes how Phase 0 scripts support controlled preparation, generation, execution, shutdown, cleanup, and review.

The model makes automated implementation activity explicit and governed while preserving the distinction between implementation support mechanisms and the logical architecture.

===== Applies To =====

This requirement applies to:

  * Phase 0 scripts;
  * generation procedures;
  * execution procedures;
  * startup and shutdown procedures;
  * cleanup procedures; and
  * repository workflow activities.

===== Verification =====

Verification SHALL confirm that the Phase 0 Implementation Profile / PSM defines a Script and Execution Model.

Verification activities should include review checks confirming that:

  * approved script categories are identified;
  * script purposes are defined;
  * execution-related responsibilities are identified; and
  * scripts remain governed by the Phase 0 implementation baseline.

===== Traceability =====

This requirement establishes the Phase 0 model governing controlled script-supported implementation activity.

Related requirement identifiers:

  * [[dido:99_annexes:annex-d-requirements:part-04:p4-req-21-12-002]]
  * [[dido:99_annexes:annex-d-requirements:part-04:p4-req-21-12-009]]
  * [[dido:99_annexes:annex-d-requirements:part-04:p4-req-21-12-011]]

Related source section:

  * [[fxdemo:04-part:21-phase-0-implementation-requirements:21-12-script-and-execution-requirements:start]]

===== Status =====

Draft

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