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  <xs:element id="onit_MortgageServiceRightsAbstract" abstract="true" name="MortgageServiceRightsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_PurchasesIssuancesSalesAndSettlementsAbstract" abstract="true" name="PurchasesIssuancesSalesAndSettlementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_FairValueMeasurementWithUnobservableInputsReconciliationAssetTransfersOutOfLevel3ToLoansHeldForInvestmentAtFairValue" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationAssetTransfersOutOfLevel3ToLoansHeldForInvestmentAtFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersToLoansHeldForSaleAtFairValue" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersToLoansHeldForSaleAtFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersToReceivablesNet" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersToReceivablesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_CapitalizationOfAdvancesOnGinnieMaeModifications" abstract="false" name="CapitalizationOfAdvancesOnGinnieMaeModifications" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisOther" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3Other" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3Other" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_TotalRealizedAndUnrealizedGainsAndLosses2Abstract" abstract="true" name="TotalRealizedAndUnrealizedGainsAndLosses2Abstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_LoansHeldforInvestmentReverseMortgagesMember" abstract="true" name="LoansHeldforInvestmentReverseMortgagesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_FairValueAgencyMortgageServicingRightsMember" abstract="true" name="FairValueAgencyMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_FairValueNonAgencyMortgageServicingRightsMember" abstract="true" name="FairValueNonAgencyMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_HMBSRelatedBorrowingsMember" abstract="true" name="HMBSRelatedBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MortgageServicingRightsPledgedMember" abstract="true" name="MortgageServicingRightsPledgedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MeasurementInputWeightedAverageCostToServiceMember" abstract="true" name="MeasurementInputWeightedAverageCostToServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf10PercentAdverseChangeInPrepaymentSpeedPercent" abstract="false" name="SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf10PercentAdverseChangeInPrepaymentSpeedPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="onit_SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf20PercentAdverseChangeInPrepaymentSpeedPercent" abstract="false" name="SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf20PercentAdverseChangeInPrepaymentSpeedPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="onit_SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf10PercentAdverseChangeInDiscountRatePercent" abstract="false" name="SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf10PercentAdverseChangeInDiscountRatePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="onit_SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf20PercentAdverseChangeInDiscountRatePercent" abstract="false" name="SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf20PercentAdverseChangeInDiscountRatePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="onit_MovementInLoansHeldForSaleAtFairValueRollForward" abstract="true" name="MovementInLoansHeldForSaleAtFairValueRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_TransferOfPortfolioLoansToReceivables" abstract="false" name="TransferOfPortfolioLoansToReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_TransferOfPortfolioLoansToRealEstateOwned" abstract="false" name="TransferOfPortfolioLoansToRealEstateOwned" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_OtherAdjustmentMortgageLoansHeldForSale" abstract="false" name="OtherAdjustmentMortgageLoansHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_PrincipalAmountOutstandingOnLoansHeldForSale" abstract="false" name="PrincipalAmountOutstandingOnLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_PremiumDiscountBalanceOnLoansHeldForSale" abstract="false" name="PremiumDiscountBalanceOnLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FairValueAdjustmentToLoansHeldForSale" abstract="false" name="FairValueAdjustmentToLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_GSELoansMember" abstract="true" name="GSELoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_GovernmentForwardLoansMember" abstract="true" name="GovernmentForwardLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_RepurchasedGinnieMaeLoansMember" abstract="true" name="RepurchasedGinnieMaeLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ReverseLoansMember" abstract="true" name="ReverseLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ForwardMortgageLoansMember" abstract="true" name="ForwardMortgageLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_GainLossOnInterestRateDerivativeInstruments" abstract="false" name="GainLossOnInterestRateDerivativeInstruments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ChangeInFairValueOfMortgageLoansHeldForSale" abstract="false" name="ChangeInFairValueOfMortgageLoansHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesUnpaidPrincipal" abstract="false" name="LoansHeldForInvestmentReverseMortgagesUnpaidPrincipal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesFairValueAdjustment" abstract="false" name="LoansHeldForInvestmentReverseMortgagesFairValueAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgages" abstract="false" name="LoansHeldForInvestmentReverseMortgages" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesOriginations" abstract="false" name="LoansHeldForInvestmentReverseMortgagesOriginations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesRepayments" abstract="false" name="LoansHeldForInvestmentReverseMortgagesRepayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesLoansHeldForSaleAtFairValue" abstract="false" name="LoansHeldForInvestmentReverseMortgagesLoansHeldForSaleAtFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesReceivablesNet" abstract="false" name="LoansHeldForInvestmentReverseMortgagesReceivablesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesRealEstateOwned" abstract="false" name="LoansHeldForInvestmentReverseMortgagesRealEstateOwned" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesOther" abstract="false" name="LoansHeldForInvestmentReverseMortgagesOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesFairValueChanges" abstract="false" name="LoansHeldForInvestmentReverseMortgagesFairValueChanges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesSecuritizedLoans" abstract="false" name="LoansHeldForInvestmentReverseMortgagesSecuritizedLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoansHeldForInvestmentReverseMortgagesUnSecuritizedLoans" abstract="false" name="LoansHeldForInvestmentReverseMortgagesUnSecuritizedLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_HMBSRelatedBorrowingsSecuritization" abstract="false" name="HMBSRelatedBorrowingsSecuritization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_HMBSRelatedBorrowingsAdditionalProceedsFromSecuritizationOfHECMLoansAndTails" abstract="false" name="HMBSRelatedBorrowingsAdditionalProceedsFromSecuritizationOfHECMLoansAndTails" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_HMBSRelatedBorrowingsRepayments" abstract="false" name="HMBSRelatedBorrowingsRepayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_HMBSRelatedBorrowingsChangeInFairValue" abstract="false" name="HMBSRelatedBorrowingsChangeInFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_NetInterestIncomeServicingFee" abstract="false" name="NetInterestIncomeServicingFee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LoandsHeldForInvestmentReverseMortgageOtherChangeInFairValue" abstract="false" name="LoandsHeldForInvestmentReverseMortgageOtherChangeInFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesOnBehalfofBorrowersTable" abstract="true" name="AdvancesOnBehalfofBorrowersTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="onit_PrincipalAndInterestMember" abstract="true" name="PrincipalAndInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_TaxesAndInsuranceMember" abstract="true" name="TaxesAndInsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ForeclosuresAndBankruptcyCostsMember" abstract="true" name="ForeclosuresAndBankruptcyCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_InvestorAxis" abstract="true" name="InvestorAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="onit_InvestorDomain" abstract="true" name="InvestorDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_GSEMember" abstract="true" name="GSEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_NonAgencyMember" abstract="true" name="NonAgencyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_AdvancesOnBehalfOfBorrowersLineItems" abstract="true" name="AdvancesOnBehalfOfBorrowersLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_AdvancesPaymentsOnBehalfOfBorrowerGross" abstract="false" name="AdvancesPaymentsOnBehalfOfBorrowerGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsOnBehalfOfBorrowerNetOfValuationAllowance" abstract="false" name="AdvancesPaymentsOnBehalfOfBorrowerNetOfValuationAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesRollForward" abstract="true" name="AdvancesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_AdvancesPaymentsOnBehalfOfBorrowerBeforeAllowanceForLosses" abstract="false" name="AdvancesPaymentsOnBehalfOfBorrowerBeforeAllowanceForLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsOnBehalfOfBorrowerIncrease" abstract="false" name="AdvancesPaymentsOnBehalfOfBorrowerIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsOnBehalfOfBorrowerTransfersToOtherAssets" abstract="false" name="AdvancesPaymentsOnBehalfOfBorrowerTransfersToOtherAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsonBehalfofBorrowerSales" abstract="false" name="AdvancesPaymentsonBehalfofBorrowerSales" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsonBehalfofBorrowersCollectionOfAdvancesChargeOffsAndOtherNet" abstract="false" name="AdvancesPaymentsonBehalfofBorrowersCollectionOfAdvancesChargeOffsAndOtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsonBehalfofBorrowerAssetAcquisitions" abstract="false" name="AdvancesPaymentsonBehalfofBorrowerAssetAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FinancingReceivableAllowanceForCreditLossWriteoffsAndOther" abstract="false" name="FinancingReceivableAllowanceForCreditLossWriteoffsAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AdvancesPaymentsOnBehalfOfBorrowerNet" abstract="false" name="AdvancesPaymentsOnBehalfOfBorrowerNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_RithmCapitalCorpAndOthersMember" abstract="true" name="RithmCapitalCorpAndOthersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_TransferredMSRSubjectToPledgedLiabilityMember" abstract="true" name="TransferredMSRSubjectToPledgedLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_FairValueGSEMortgageServicingRightsMember" abstract="true" name="FairValueGSEMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_FairValueGNMAMortgageServicingRightsMember" abstract="true" name="FairValueGNMAMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_NewResidentialInvestmentCorpMember" abstract="true" name="NewResidentialInvestmentCorpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MSRAssetVehicleLLCMember" abstract="true" name="MSRAssetVehicleLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MAVAssetVehicleLLCMember" abstract="true" name="MAVAssetVehicleLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ServicingAssetsAtFairValueAdditionsRecognizedFromMortgageSales" abstract="false" name="ServicingAssetsAtFairValueAdditionsRecognizedFromMortgageSales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AssetsServiced" abstract="false" name="AssetsServiced" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAssetsAtFairValueNetAdditionsSalesRecognized" abstract="false" name="ServicingAssetsAtFairValueNetAdditionsSalesRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_RunoffSettlementsAndOtherFinancingLiability" abstract="false" name="RunoffSettlementsAndOtherFinancingLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_TotalFairValueChangesInServicingLiabilityAtFairValue" abstract="false" name="TotalFairValueChangesInServicingLiabilityAtFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_TotalMSRReserveFairValueGainsLosses" abstract="false" name="TotalMSRReserveFairValueGainsLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAssetAtFairValueAmountDerecognized" abstract="false" name="ServicingAssetAtFairValueAmountDerecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_OwnedMortgageServicingRightsMember" abstract="true" name="OwnedMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MAVTransferredMortgageServicingRightsMember" abstract="true" name="MAVTransferredMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MortgageServicingRightsTitleRetainedMember" abstract="true" name="MortgageServicingRightsTitleRetainedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ContractuallySpecifiedSubservicingFeesAmount" abstract="false" name="ContractuallySpecifiedSubservicingFeesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ContractuallySpecifiedSubservicingFeesCollectedOnBehalfOfCounterparty" abstract="false" name="ContractuallySpecifiedSubservicingFeesCollectedOnBehalfOfCounterparty" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ContractuallySpecifiedServicingFeesCollectedOnBehalfOfCounterparty" abstract="false" name="ContractuallySpecifiedServicingFeesCollectedOnBehalfOfCounterparty" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingFeeCollectedOnBehalfOfCounterparty" abstract="false" name="ServicingFeeCollectedOnBehalfOfCounterparty" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ContractuallySpecifiedServicingAndSubservicingFeesAmountTotal" abstract="false" name="ContractuallySpecifiedServicingAndSubservicingFeesAmountTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ReverseSubservicingAncillaryIncome" abstract="false" name="ReverseSubservicingAncillaryIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FloatEarningsEarnedInExchangeForServicingFinancialAssets" abstract="false" name="FloatEarningsEarnedInExchangeForServicingFinancialAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAndSubservicingFeesOwnedMSR" abstract="false" name="ServicingAndSubservicingFeesOwnedMSR" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAndSubservicingFeesTransferredMSR" abstract="false" name="ServicingAndSubservicingFeesTransferredMSR" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="onit_ServicingFeeCollectedOnBehalfOfCounterpartyAmountPreviouslySold" abstract="false" name="ServicingFeeCollectedOnBehalfOfCounterpartyAmountPreviouslySold" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_RithmCapitalCorpMember" abstract="true" name="RithmCapitalCorpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="onit_OriginalRightstoMortgageServicingRightsAgreementsMember" abstract="true" name="OriginalRightstoMortgageServicingRightsAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_FinancingLiabilityAtFairValue" abstract="false" name="FinancingLiabilityAtFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAssetAtFairValueSales" abstract="false" name="ServicingAssetAtFairValueSales" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingLiabilityAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptionsNetOfAdjustments" abstract="false" name="ServicingLiabilityAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptionsNetOfAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_TotalFairValueChangesInServicingLiabilityAtFairValueNetOfAdjustments" abstract="false" name="TotalFairValueChangesInServicingLiabilityAtFairValueNetOfAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="onit_NewRightsToMortgageServicingRightsAgreementsMember" abstract="true" name="NewRightsToMortgageServicingRightsAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="onit_ServicingReceivableGovernmentInsuredLoanClaims" abstract="false" name="ServicingReceivableGovernmentInsuredLoanClaims" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="onit_MortgageServicingRightsTitleTransferredMember" abstract="true" name="MortgageServicingRightsTitleTransferredMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="onit_SaleOfEquityMethodInvestmentReductionInLockoutRestrictionPercentage" abstract="false" name="SaleOfEquityMethodInvestmentReductionInLockoutRestrictionPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="onit_OtherCounterpartiesForPledgedMSRLiabMember" abstract="true" name="OtherCounterpartiesForPledgedMSRLiabMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="onit_SeriesTwoThousandFifteenVariableFundingNotesMember" abstract="true" name="SeriesTwoThousandFifteenVariableFundingNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_SeriesTwoThousandFifteenVariableFundingNotesOneMember" abstract="true" name="SeriesTwoThousandFifteenVariableFundingNotesOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_EBOAdvanceFacilityMember" abstract="true" name="EBOAdvanceFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OcwenMasterAdvanceReceivablesTrustMember" abstract="true" name="OcwenMasterAdvanceReceivablesTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OcwenFreddieAdvanceFundingMember" abstract="true" name="OcwenFreddieAdvanceFundingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_October2024MasterRepurchaseAgreementMember" abstract="true" name="October2024MasterRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_NoMaturityMortgageWarehouseAgreementMember" abstract="true" name="NoMaturityMortgageWarehouseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="onit_LoanAndSecurityAgreementMember" abstract="true" name="LoanAndSecurityAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="onit_A200MillionApril2024MasterRepurchaseAgreementMember" abstract="true" name="A200MillionApril2024MasterRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OLIT2023NotesMember" abstract="true" name="OLIT2023NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OLITNotesFY2022Member" abstract="true" name="OLITNotesFY2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OLITAssetBackedNotesSeries2024HBIMember" abstract="true" name="OLITAssetBackedNotesSeries2024HBIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_AgencyMortgageServicingRightsFinancingFacilityMember" abstract="true" name="AgencyMortgageServicingRightsFinancingFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_GinnieMaeMortgageServicingRightsFinancingFacilityMember" abstract="true" name="GinnieMaeMortgageServicingRightsFinancingFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OcwenExcessSpreadCollateralizedNotesSeries2019PLS1ClassAMember" abstract="true" name="OcwenExcessSpreadCollateralizedNotesSeries2019PLS1ClassAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_PLS1NotesIssuerMembershipInterestMasterRepurchaseAgreementMember" abstract="true" name="PLS1NotesIssuerMembershipInterestMasterRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_OASISSeries20141Member" abstract="true" name="OASISSeries20141Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_AgencyMSRFinancingFacilityRevolvingLoanMember" abstract="true" name="AgencyMSRFinancingFacilityRevolvingLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_September2024LoanAndSecurityAgreementMember" abstract="true" name="September2024LoanAndSecurityAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_SecuritiesMasterRepurchaseAgreementMember" abstract="true" name="SecuritiesMasterRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_OLITAssetBackedNotesSeries2024HB2Member" abstract="true" name="OLITAssetBackedNotesSeries2024HB2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_MSRFinancingFacilitiesMember" abstract="true" name="MSRFinancingFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OLITNoteDiscountAndAmortizationAxis" abstract="true" name="OLITNoteDiscountAndAmortizationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
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  <xs:element id="onit_LongTermDebtCertificatePeriodIncrease" abstract="false" name="LongTermDebtCertificatePeriodIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentySixMember" abstract="true" name="SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_TwelvePercentPaidInCashOrThirteenPointTwoFivePercentPaidInKindSeniorNotesDueTwoThousandTwentySevenMember" abstract="true" name="TwelvePercentPaidInCashOrThirteenPointTwoFivePercentPaidInKindSeniorNotesDueTwoThousandTwentySevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_PMCSeniorSecuredNotesMember" abstract="true" name="PMCSeniorSecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_SeniorNotesDue2029Member" abstract="true" name="SeniorNotesDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_DebtInstrumentCovenantComplianceConsolidatedTangibleNetWorthatPeriodEnd" abstract="false" name="DebtInstrumentCovenantComplianceConsolidatedTangibleNetWorthatPeriodEnd" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="onit_RemittanceOfAdvancesAndServicingFees" abstract="false" name="RemittanceOfAdvancesAndServicingFees" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_IndemnificationObligationsLiability" abstract="false" name="IndemnificationObligationsLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ChecksHeldForEscheat" abstract="false" name="ChecksHeldForEscheat" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_DueToServicingAndSubservicingInvestors" abstract="false" name="DueToServicingAndSubservicingInvestors" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAssetsPurchasePriceHoldback" abstract="false" name="ServicingAssetsPurchasePriceHoldback" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ExcessServicingFeesSpreadPayable" abstract="false" name="ExcessServicingFeesSpreadPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ForwardSalesOfReverseLoansMember" abstract="true" name="ForwardSalesOfReverseLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ReverseMortgageLoanInterestRateLockCommitmentsMember" abstract="true" name="ReverseMortgageLoanInterestRateLockCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_InterestRateSwapFuturesAndTBAForwardMBSTradesMember" abstract="true" name="InterestRateSwapFuturesAndTBAForwardMBSTradesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_OtherDerivativesMember" abstract="true" name="OtherDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ForwardTradesMember" abstract="true" name="ForwardTradesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_LoanCommitmentTerm" abstract="false" name="LoanCommitmentTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="onit_LoanCommitmentAverageTerm" abstract="false" name="LoanCommitmentAverageTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="onit_LoansHeldForSalePeriodOfSale" abstract="false" name="LoansHeldForSalePeriodOfSale" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="onit_LoanCommitmentToCorrespondents" abstract="false" name="LoanCommitmentToCorrespondents" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="onit_MinimumHedgeCoverageRatio" abstract="false" name="MinimumHedgeCoverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="onit_InterestRateRiskChangeInInterestRate" abstract="false" name="InterestRateRiskChangeInInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="onit_ScheduleofInterestExpenseTable" abstract="true" name="ScheduleofInterestExpenseTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="onit_EscrowMember" abstract="true" name="EscrowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ScheduleofInterestExpenseLineItems" abstract="true" name="ScheduleofInterestExpenseLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_MarketBasedMember" abstract="true" name="MarketBasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_IncrementalCommonSharesAttributableToCommonStockAwards" abstract="false" name="IncrementalCommonSharesAttributableToCommonStockAwards" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="onit_OriginationsMember" abstract="true" name="OriginationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ResultsOfOperationsAbstract" abstract="true" name="ResultsOfOperationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_ProfessionalFeesNet" abstract="false" name="ProfessionalFeesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_CorporateOverheadAllocations" abstract="false" name="CorporateOverheadAllocations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_OtherIncomeExpenseAbstract0" abstract="true" name="OtherIncomeExpenseAbstract0" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_TotalAssetsAbstract" abstract="true" name="TotalAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_PHHMortgageCorporationMember" abstract="true" name="PHHMortgageCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_UnpaidPrincipalBalanceMember" abstract="true" name="UnpaidPrincipalBalanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_LoanCountMember" abstract="true" name="LoanCountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_RegulatoryRequirementEligibleLiquidityForLicensingAndSellerOrServicerObligations" abstract="false" name="RegulatoryRequirementEligibleLiquidityForLicensingAndSellerOrServicerObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ServicingAndSubservicingFeesBenchmarkMember" abstract="true" name="ServicingAndSubservicingFeesBenchmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_DelinquentLoansMember" abstract="true" name="DelinquentLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ServicingAndSubservicingPortfolioBenchmarkMember" abstract="true" name="ServicingAndSubservicingPortfolioBenchmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_PledgedMSRLiabilityExpenseBenchmarkMember" abstract="true" name="PledgedMSRLiabilityExpenseBenchmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_FloatingRateReverseMortgageLoansMember" abstract="true" name="FloatingRateReverseMortgageLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_ForwardMortgageLoanInterestRateLockCommitmentsMember" abstract="true" name="ForwardMortgageLoanInterestRateLockCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_AdditionalBorrowingCapacityToBorrowers" abstract="false" name="AdditionalBorrowingCapacityToBorrowers" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_FundedAmountInConnectionWithReverseMortgageLoans" abstract="false" name="FundedAmountInConnectionWithReverseMortgageLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ShortTermCommitmentsToLend" abstract="false" name="ShortTermCommitmentsToLend" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ThresholdPercentageOfOutstandingPrincipalBalanceOnMaximumClaimAmount" abstract="false" name="ThresholdPercentageOfOutstandingPrincipalBalanceOnMaximumClaimAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="onit_ConcentrationRiskAmount" abstract="false" name="ConcentrationRiskAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ActiveMember" abstract="true" name="ActiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_InactiveMember" abstract="true" name="InactiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_HomeEquityConversionMortgageBackedSecurityMaximumClaimAmountAxis" abstract="true" name="HomeEquityConversionMortgageBackedSecurityMaximumClaimAmountAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="onit_HomeEquityConversionMortgageBackedSecurityMaximumClaimAmountDomain" abstract="true" name="HomeEquityConversionMortgageBackedSecurityMaximumClaimAmountDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MaximumClaimAmountLessThan92Member" abstract="true" name="MaximumClaimAmountLessThan92Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MaximumClaimAmountGreaterThan92AndLessThan95Member" abstract="true" name="MaximumClaimAmountGreaterThan92AndLessThan95Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_MaximumClaimAmountGreaterThan95AndLessThan98Member" abstract="true" name="MaximumClaimAmountGreaterThan95AndLessThan98Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_SecuritizedHomeEquityConversionMortgageBackedSecurity" abstract="false" name="SecuritizedHomeEquityConversionMortgageBackedSecurity" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_LongTermPurchaseCommitmentRollForward" abstract="true" name="LongTermPurchaseCommitmentRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_HomeEquityConversionMortgageBackedSecurityRepurchasesOutstandingValue" abstract="false" name="HomeEquityConversionMortgageBackedSecurityRepurchasesOutstandingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AmountofAdditionsToHomeEquityConversionMortgageBackedSecurityRepurchasesValue" abstract="false" name="AmountofAdditionsToHomeEquityConversionMortgageBackedSecurityRepurchasesValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_RecoveriesRelatedToHomeEquityConversionMortgageBackedSecurityRepurchasesValue" abstract="false" name="RecoveriesRelatedToHomeEquityConversionMortgageBackedSecurityRepurchasesValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_TransfersRelatedToHomeEquityConversionMortgageBackedSecurityRepurchasesValue" abstract="false" name="TransfersRelatedToHomeEquityConversionMortgageBackedSecurityRepurchasesValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ChangeInValueOfHomeEquityConversionMortgageBackedSecurityRepurchasesValue" abstract="false" name="ChangeInValueOfHomeEquityConversionMortgageBackedSecurityRepurchasesValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_NumberOfCases" abstract="false" name="NumberOfCases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="onit_WarrantyRepurchaseDemandsUnpaidPrincipalBalance" abstract="false" name="WarrantyRepurchaseDemandsUnpaidPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_WarrantyRepurchaseDemandsNumberOfLoans" abstract="false" name="WarrantyRepurchaseDemandsNumberOfLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="onit_IndemnificationObligationsLiabilityRollForward" abstract="true" name="IndemnificationObligationsLiabilityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="onit_RepresentationWarrantyAndCompensatoryFeesObligations" abstract="false" name="RepresentationWarrantyAndCompensatoryFeesObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_ProvisionForRepresentationAndWarrantyObligations" abstract="false" name="ProvisionForRepresentationAndWarrantyObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_IndemnificationObligationsLiabilityReserves" abstract="false" name="IndemnificationObligationsLiabilityReserves" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_IndemnificationObligationsLiabilityChargeOffs" abstract="false" name="IndemnificationObligationsLiabilityChargeOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_PMCSeniorSecuredNotesDue2026Member" abstract="true" name="PMCSeniorSecuredNotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_OFCSeniorSecuredNotesDue2027Member" abstract="true" name="OFCSeniorSecuredNotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_PHHSeniorNotesMember" abstract="true" name="PHHSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_WAMFinancingAgreementMember" abstract="true" name="WAMFinancingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_WaterfallMember" abstract="true" name="WaterfallMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_OaktreeCapitalManagementLPAndAffiliatesMember" abstract="true" name="OaktreeCapitalManagementLPAndAffiliatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="onit_InitialCommittedAmountMember" abstract="true" name="InitialCommittedAmountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_CommitmentAfterFirstSecuritizationOfHECMTailsMember" abstract="true" name="CommitmentAfterFirstSecuritizationOfHECMTailsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="onit_PreferredStockDividendRatePercentageIncrease" abstract="false" name="PreferredStockDividendRatePercentageIncrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="onit_PreferredStockDividendRateCapPercentage" abstract="false" name="PreferredStockDividendRateCapPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="onit_DebtInstrumentPaymentOfMakeWholeRedemptionPremium" abstract="false" name="DebtInstrumentPaymentOfMakeWholeRedemptionPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AssetAcquisitionBookValue" abstract="false" name="AssetAcquisitionBookValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_AssetAcquisitionCash" abstract="false" name="AssetAcquisitionCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="onit_PreferredStockDividendAccrualRateTerm" abstract="false" name="PreferredStockDividendAccrualRateTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="onit_PreferredStockRepurchasePricePercentageOfPrincipal" abstract="false" name="PreferredStockRepurchasePricePercentageOfPrincipal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="onit_PreferredStockResaleRegistrationAgreementMaximumTerm" abstract="false" name="PreferredStockResaleRegistrationAgreementMaximumTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="onit_LoanAndSecurityAgreementRevolvingBasisTerm" abstract="false" name="LoanAndSecurityAgreementRevolvingBasisTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
