{"type": "object", "properties": {"BILLRUNNO": {"type": "integer", "minimum": 0, "maximum": 65535, "description": "Billing run number"}, "CONTRACTYEAR": {"type": "integer", "minimum": 0, "maximum": 65535, "description": "Billing contract year"}, "PARTICIPANTID": {"type": "string", "description": "Unique identifier for the participant"}, "SETTLEMENTDATE": {"type": "string", "examples": ["2026/01/20 00:05:00"], "format": "date-time", "description": "Settlement Date\nWARNING: Despite what the name suggests, this is a datetime, not a date."}, "TNI": {"type": "string", "description": "Unique identifier for the connection point"}, "WEEKNO": {"type": "integer", "minimum": 0, "maximum": 65535, "description": "Billing week number\nWARNING: There may be 53 weeks in a year, depending on how weeks align to the year start/end."}, "REGIONID": {"type": "string", "enum": ["QLD1", "VIC1", "TAS1", "NSW1", "SA1", "SNOWY1"], "description": "Unique identifier for the region to which the TNI belongs to on this settlement date"}, "SUBSTITUTEDEMAND": {"type": "number", "description": "Substitute metered quantity for non-energy recovery in MWh for the TNI and participant in the trading interval. A negative value indicates net consumption and a positive value indicates net generation"}}, "required": ["BILLRUNNO", "CONTRACTYEAR", "PARTICIPANTID", "SETTLEMENTDATE", "TNI", "WEEKNO"], "description": "Demand Values Substituted in Billing Calculation"}