{
  "topic": "event-scoped custom dimensions",
  "worked_example": {
    "dimension_name": "Payment type",
    "scope": "Event",
    "event_parameter": "payment_type",
    "event": "add_payment_info",
    "sent_date": "2026-11-11",
    "usable_earliest": "2026-11-12",
    "usable_latest": "2026-11-13"
  },
  "checkpoints": [
    "Parameter confirmed in Realtime report",
    "Scope is Event, locked after save",
    "Event parameter name copied exactly"
  ]
}