{
  "title": "Elevator equipment data for AI door and unit records",
  "source_page": "https://fiund.com/industries/elevator-door-handing-unit-record-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A landing number alone does not identify the opening",
    "context": "Fictional drawings represent two sides of a paper unit. No actual controls or installation details are included.",
    "records": [
      [
        "1",
        "Unit register",
        "U7 at floor 2 has front opening F2 and rear opening R2."
      ],
      [
        "2",
        "Assembly list",
        "F2 uses mock left panel L; R2 uses mock right panel R."
      ],
      [
        "3",
        "Photo",
        "U7 floor 2 rear marker visible; panel labeled L."
      ]
    ],
    "question": "Which opening's assembly should be checked?",
    "answer": "Check R2, because the rear marker in record 3 resolves the opening within the floor in record 1. Record 2 expects R at R2, while the picture shows L. L would match F2, so a floor-only join would hide the mismatch.",
    "failureModes": [
      "Using unit and floor while ignoring opening side",
      "Applying front-opening evidence to the rear"
    ],
    "fields": [
      [
        "unit_floor",
        "Locates the broader assembly"
      ],
      [
        "opening_side",
        "Resolves front versus rear"
      ],
      [
        "panel_variant",
        "Matches the opening-specific record"
      ]
    ],
    "holdout": "Add two openings on one side with separate markers; require the exact opening key.",
    "boundary": "No real lift layouts, safety system data, servicing or installation advice."
  }
}