When at least one of the underlying values of `BalanceCashInflows` is reported `BalanceCashInflows` MUST also be reported. When at least one of the underlying values of `BalanceCashOutflows` is reported `BalanceCashOutflows` MUST also be reported. When at least one of the underlying values of `BalanceFinancialFixedAssets` is reported `BalanceFinancialFixedAssets` MUST also be reported. When at least one of the underlying values of `CashFlowFinancingActivities` is reported `CashFlowFinancingActivities` MUST also be reported. When at least one of the underlying values of `CashFlowInvestingActivities` is reported `CashFlowInvestingActivities` MUST also be reported. When at least one of the underlying values of `CashFlowOperatingActivities` is reported `CashFlowOperatingActivities` MUST also be reported. When at least one of the underlying values of `CashFlowPPEActivities` is reported `CashFlowPPEActivities` MUST also be reported. When at least one of the underlying values of `ProceedsSalesPropertyPlantAndEquipment` is reported `ProceedsSalesPropertyPlantAndEquipment` MUST also be reported. When at least one of the underlying values of `PurchasePropertyPlantEquipment` is reported `PurchasePropertyPlantEquipment` MUST also be reported. `BalanceCashInflows` MUST be equal to the summation of the underlying values. `BalanceCashOutflows` MUST be equal to the summation of the underlying values. `BalanceFinancialFixedAssets` MUST be equal to the summation of the underlying values. `CashAndCashEquivalentsCashFlow` at beginning of the previous period MUST exist at least once. `CashAndCashEquivalentsCashFlow` at end of period MUST be equal to `CashAndCashEquivalentsCashFlow` at beginning of period + `IncreaseDecreaseCashAndCashEquivalents` + `ChangesShortTermCashAndCashEquivalents`. `CashFlowFinancingActivities` MUST be equal to the summation of the underlying values. `CashFlowInvestingActivities` MUST be equal to the summation of the underlying values. `CashFlowOperatingActivities` MUST be equal to the summation of the underlying values. `CashFlowPPEActivities` MUST be equal to the summation of the underlying values. `IncreaseDecreaseCashAndCashEquivalents` MUST be equal to + `CashFlowOperatingActivities` + `CashFlowInvestingActivities` + `CashFlowFinancingActivities`. `ProceedsSalesPropertyPlantAndEquipment` MUST be equal to the summation of the underlying values. `PurchasePropertyPlantEquipment` MUST be equal to the summation of the underlying values. `RentalIncomeClassifiedAsOperatingActivities` MUST exist at least once. `RentalIncomeClassifiedAsOperatingActivities` MUST exist at least once.