{"type": "object", "properties": {"REGIONID": {"type": "string", "enum": ["QLD1", "VIC1", "TAS1", "NSW1", "SA1", "SNOWY1"], "description": "Unique identifier for the region"}, "VERSION_DATETIME": {"type": "string", "examples": ["2021/10/26 09:15:10.363"], "format": "date-time", "description": "The Version Date time of the latest changes."}, "WDRRRPERIOD": {"type": "string", "examples": ["2021Q4", "2022Q1", "2022Q2", "2022Q3", "2022Q4", "2023Q1", "2023Q2", "2023Q3", "2023Q4", "2024Q1", "2024Q2", "2024Q3", "2024Q4", "2025Q1", "2025Q2", "2025Q3", "2025Q4", "2026Q1", "2026Q2", "2026Q3", "2026Q4"], "description": "Unique identifier for the period to which the WDRRR applies. For quarter-based periods, this will be equal to YYYY[Q]NN, e.g. 2020Q3 for 2020 Quarter 3."}, "ISFIRM": {"type": "boolean", "examples": ["1"], "description": "A flag to indicate that the WDRRR value is FIRM for the period and region, i.e. it is based on a complete set of firm prices from dispatch. Possible Values are 1 and 0"}, "LASTCHANGED": {"type": "string", "examples": ["2021/10/26 09:15:10.363"], "format": "date-time", "description": "Last changed date for the record"}, "WDRRR": {"type": "number", "examples": ["38.05475424", "279.31682147"], "description": "WDRRR value for the period and region ($/MWh)"}}, "required": ["REGIONID", "VERSION_DATETIME", "WDRRRPERIOD"], "description": "Settlements WDR transactions"}