{"type": "object", "properties": {"PERIODDATE": {"type": "string", "examples": ["2026/09/01 00:30:00"], "format": "date-time", "description": "30-minute interval period, 1 to 48 from the start of the calendar day\nWARNING: Despite what the name suggests, this is a datetime, not a date."}, "REGIONID": {"type": "string", "enum": ["QLD1", "VIC1", "TAS1", "NSW1", "SA1", "SNOWY1"], "description": "Region Identifier"}, "LASTCHANGED": {"type": "string", "examples": ["2026/09/01 00:25:07"], "format": "date-time", "description": "Last date and time record changed"}, "PERIODID": {"type": "integer", "examples": ["1", "48"], "maximum": 32767, "minimum": -32768, "description": "The 30-minute interval period, 1 to 48"}, "PRICE_CONFIDENCE": {"type": "string", "examples": ["FIRM"], "description": "Result of Manifestly Incorrect Inputs Price Status and OCD_Status - either \"FIRM\" or \"NOT FIRM\". Only FIRM if the Dispatch Interval is resolved for both MII and OCD"}, "RRP": {"type": "number", "examples": ["-0.02", "0.01", "0", "162"], "description": "Regional reference price for this period"}}, "required": ["PERIODDATE", "REGIONID", "PERIODID"], "description": "Reflects the 30-minute average price (the pre-5MS trading price)."}