The mutation during the period, `MutationMonthlyRent`, MUST be equal to the difference between the reported values of `MonthlyRentBasedOnNumbers` at end of period and `MonthlyRentBasedOnNumbers` at beginning of period. When `MonthlyRentBasedOnNumbers` is reported then `NumberOfIndependentRentalPropertiesRelevantForRentKeyWithoutPerfomanceAgreement` MUST exist at least once within the same context. When `NumberOfIndependentRentalPropertiesRelevantForRentKeyWithoutPerfomanceAgreement` is reported then `MonthlyRentBasedOnNumbers` MUST exist at least once within the same context. When `NumberOfIndependentRentalPropertiesRelevantForRentKeyWithoutPerfomanceAgreement` is reported then `MonthlyRentBasedOnNumbers` MUST exist at least once within the same context. When `NumberOfIndependentRentalPropertiesRelevantForRentKey` is reported then `IndependentRentalPropertiesRelevantForRentKeyRentIncreaseEqualOrLowerThanPeformanceAgreement` MUST exist at least once within the same context. When `NumberOfIndependentRentalPropertiesRelevantForRentKey` is reported then `NumberOfMunicapalitiesPerformanceAgreementsReportingYear` MUST exist at least once within the same context. When `NumberOfMunicapalitiesPerformanceAgreementsReportingYear` is reported then `NumberOfIndependentRentalPropertiesRelevantForRentKey` MUST exist at least once within the same context. When the reported value of `IndependentRentalPropertiesRelevantForRentKeyRentIncreaseEqualOrLowerThanPeformanceAgreement` is equal to `Ja` then `NumberOfMunicapalitiesRentIncreaseHigherThanPerformanceAgreement` MUST NOT be reported. When the reported value of `IndependentRentalPropertiesRelevantForRentKeyRentIncreaseEqualOrLowerThanPeformanceAgreement` is equal to `Nee` then `NumberOfMunicapalitiesRentIncreaseHigherThanPerformanceAgreement` MUST exist at least once. `AdditionalRevenueFromHigherRentThanNorm` MUST exist at least once. `MutationMonthlyRent` divided by `MonthlyRentBasedOnNumbers` at beginning of period, rounded to 4 decimals, MUST be equal to `IncreaseRent`. `NumberOfIndependentRentalProperties` MUST be equal to + `NumberOfUnitsNotInCalculation` + `NumberOfIndependentRentalPropertiesRelevantForRentKey` + `NumberOfIndependentRentalPropertiesRelevantForRentKeyWithoutPerfomanceAgreement`. `NumberOfIndependentRentalProperties` MUST exist at least once. `NumberOfUnitsNotInCalculation` MUST exist at least once. `NumberOfUnitsWithPerfomanceAgreement` MUST exist at least once.