{
  "synthetic": true,
  "scope": "Editorial teaching case, not a bank export, import template, vendor test or accounting recommendation",
  "topic_id": "TP-051",
  "switch_date": "2026-10-01",
  "old_system_source_through": "2026-09-30",
  "new_system_source_from": "2026-10-01",
  "history_strategy_choices": [
    "Real historic bank movements",
    "Document payment status via clearing route"
  ],
  "control": "Do not count an artificial clearing marker as another real bank event"
}