<?xml version='1.0' encoding='US-ASCII'?><schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xsc="http://xsc/20260331" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:srt-types="http://fasb.org/srt-types/2025" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:oef="http://xbrl.sec.gov/oef/2025" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:oef-pre="http://xbrl.sec.gov/oef-pre/2025" xmlns:oef-lab="http://xbrl.sec.gov/oef-lab/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:oef-def="http://xbrl.sec.gov/oef-def/2025" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:srt="http://fasb.org/srt/2025" xmlns:oef-sr="http://xbrl.sec.gov/oef-sr/2025" xmlns:srt-roles="http://fasb.org/srt-roles/2025" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" targetNamespace="http://xsc/20260331" elementFormDefault="qualified"><import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/><import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/><import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/><import namespace="http://fasb.org/us-types/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd"/><import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/><import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/><import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/><import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd"/><import namespace="http://xbrl.sec.gov/oef-sr/2025" schemaLocation="https://xbrl.sec.gov/oef/2025/oef-sr-2025.xsd"/><import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/><import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd"/><import namespace="http://fasb.org/srt-roles/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd"/><annotation><appinfo><link:linkbase id="lnk"><link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReport" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReport"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportHoldingsDetails"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportLineGraphDetails"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportAverageAnnualReturnDetails"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#AdditionalIndexOnly"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/MaturityOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#MaturityOnly"/><link:roleRef roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldingOnly"/><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReport"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_C000234742Member" xlink:label="C000234742Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000234742Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/></link:presentationLink><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_C000234742Member" xlink:label="C000234742Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000234742Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_LargestHoldingsDomain" xlink:label="LargestHoldingsDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" xlink:label="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico40007012035CTIMember" xlink:label="CommonwealthofPuertoRico40007012035CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico40007012035CTIMember" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" xlink:label="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" xlink:label="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" order="4.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico40007012037CTIMember" xlink:label="CommonwealthofPuertoRico40007012037CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico40007012037CTIMember" order="5.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico562507012027CTIMember" xlink:label="CommonwealthofPuertoRico562507012027CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico562507012027CTIMember" order="6.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" order="7.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico57507012031CTIMember" xlink:label="CommonwealthofPuertoRico57507012031CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico57507012031CTIMember" order="8.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" order="9.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" order="10.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_MaturityDomain" xlink:label="MaturityDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_A1Minus3YearsCTIMember" xlink:label="A1Minus3YearsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="MaturityDomain" xlink:to="A1Minus3YearsCTIMember" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A5Minus10YearsCTIMember" xlink:label="A5Minus10YearsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="MaturityDomain" xlink:to="A5Minus10YearsCTIMember" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A10YearsCTIMember" xlink:label="A10YearsCTIMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="MaturityDomain" xlink:to="A10YearsCTIMember" order="3.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/></link:presentationLink><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_C000234742Member" xlink:label="C000234742Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000234742Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondIndex1582AdditionalIndexMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdditionalIndexDomain" xlink:to="BloombergMunicipalBondIndex1582AdditionalIndexMember" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdditionalIndexDomain" xlink:to="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1"/></link:presentationLink><link:presentationLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_C000234742Member" xlink:label="C000234742Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareClassDomain" xlink:to="C000234742Member" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/label" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondIndex1582AdditionalIndexMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdditionalIndexDomain" xlink:to="BloombergMunicipalBondIndex1582AdditionalIndexMember" order="1.0" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdditionalIndexDomain" xlink:to="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" order="2.0" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1"/></link:presentationLink><link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_C000234742Member" xlink:label="C000234742Member"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000234742Member" order="1.0" priority="1"/></link:definitionLink><link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondIndex1582AdditionalIndexMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="BloombergMunicipalBondIndex1582AdditionalIndexMember" order="1.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" order="2.0" priority="1"/></link:definitionLink><link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_MaturityDomain" xlink:label="MaturityDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_A1Minus3YearsCTIMember" xlink:label="A1Minus3YearsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MaturityDomain" xlink:to="A1Minus3YearsCTIMember" order="1.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A5Minus10YearsCTIMember" xlink:label="A5Minus10YearsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MaturityDomain" xlink:to="A5Minus10YearsCTIMember" order="2.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A10YearsCTIMember" xlink:label="A10YearsCTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MaturityDomain" xlink:to="A10YearsCTIMember" order="3.0" priority="1"/></link:definitionLink><link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/LargestHoldingOnly"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_LargestHoldingsDomain" xlink:label="LargestHoldingsDomain"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" xlink:label="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" order="1.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico40007012035CTIMember" xlink:label="CommonwealthofPuertoRico40007012035CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico40007012035CTIMember" order="2.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" xlink:label="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" order="3.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" xlink:label="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" order="4.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico40007012037CTIMember" xlink:label="CommonwealthofPuertoRico40007012037CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico40007012037CTIMember" order="5.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico562507012027CTIMember" xlink:label="CommonwealthofPuertoRico562507012027CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico562507012027CTIMember" order="6.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" order="7.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico57507012031CTIMember" xlink:label="CommonwealthofPuertoRico57507012031CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="CommonwealthofPuertoRico57507012031CTIMember" order="8.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" order="9.0" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember"/><link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" order="10.0" priority="1"/></link:definitionLink><link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link"><link:loc xlink:type="locator" xlink:href="#xsc_C000234742Member" xlink:label="C000234742Member"/><link:label xlink:type="resource" xlink:label="label_C000234742Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000234742</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000234742Member" xlink:to="label_C000234742Member" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondIndex1582AdditionalIndexMember"/><link:label xlink:type="resource" xlink:label="label_BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Bloomberg Municipal Bond Index</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:to="label_BloombergMunicipalBondIndex1582AdditionalIndexMember" priority="1"/><link:label xlink:type="resource" xlink:label="label_BloombergMunicipalBondIndex1582AdditionalIndexMember_1582" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Bloomberg Municipal Bond Index_1582</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BloombergMunicipalBondIndex1582AdditionalIndexMember" xlink:to="label_BloombergMunicipalBondIndex1582AdditionalIndexMember_1582" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:label="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember"/><link:label xlink:type="resource" xlink:label="label_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Bloomberg Municipal Bond: High Yield (non-Investment Grade)Index</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:to="label_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" priority="1"/><link:label xlink:type="resource" xlink:label="label_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember_1582" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Bloomberg Municipal Bond: High Yield (non-Investment Grade)Index_1582</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" xlink:to="label_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember_1582" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A1Minus3YearsCTIMember" xlink:label="A1Minus3YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A1Minus3YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">1-3 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A1Minus3YearsCTIMember" xlink:to="label_A1Minus3YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A5Minus10YearsCTIMember" xlink:label="A5Minus10YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A5Minus10YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">5-10 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A5Minus10YearsCTIMember" xlink:to="label_A5Minus10YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_A10YearsCTIMember" xlink:label="A10YearsCTIMember"/><link:label xlink:type="resource" xlink:label="label_A10YearsCTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">&gt; 10 Years</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="A10YearsCTIMember" xlink:to="label_A10YearsCTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" xlink:label="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember"/><link:label xlink:type="resource" xlink:label="label_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, 4.784%, 07/01/2058</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" xlink:to="label_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico40007012035CTIMember" xlink:label="CommonwealthofPuertoRico40007012035CTIMember"/><link:label xlink:type="resource" xlink:label="label_CommonwealthofPuertoRico40007012035CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Commonwealth of Puerto Rico, 4.00%, 07/01/2035</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonwealthofPuertoRico40007012035CTIMember" xlink:to="label_CommonwealthofPuertoRico40007012035CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" xlink:label="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember"/><link:label xlink:type="resource" xlink:label="label_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, 4.329%, 07/01/2040</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" xlink:to="label_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" xlink:label="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember"/><link:label xlink:type="resource" xlink:label="label_MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Matching Fund Special Purpose Securitization Corp., 5.00%, 10/01/2039</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" xlink:to="label_MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico40007012037CTIMember" xlink:label="CommonwealthofPuertoRico40007012037CTIMember"/><link:label xlink:type="resource" xlink:label="label_CommonwealthofPuertoRico40007012037CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Commonwealth of Puerto Rico, 4.00%, 07/01/2037</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonwealthofPuertoRico40007012037CTIMember" xlink:to="label_CommonwealthofPuertoRico40007012037CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico562507012027CTIMember" xlink:label="CommonwealthofPuertoRico562507012027CTIMember"/><link:label xlink:type="resource" xlink:label="label_CommonwealthofPuertoRico562507012027CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Commonwealth of Puerto Rico, 5.625%, 07/01/2027</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonwealthofPuertoRico562507012027CTIMember" xlink:to="label_CommonwealthofPuertoRico562507012027CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember"/><link:label xlink:type="resource" xlink:label="label_PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority, 5.00%, 07/01/2047</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" xlink:to="label_PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_CommonwealthofPuertoRico57507012031CTIMember" xlink:label="CommonwealthofPuertoRico57507012031CTIMember"/><link:label xlink:type="resource" xlink:label="label_CommonwealthofPuertoRico57507012031CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Commonwealth of Puerto Rico, 5.75%, 07/01/2031</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonwealthofPuertoRico57507012031CTIMember" xlink:to="label_CommonwealthofPuertoRico57507012031CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember"/><link:label xlink:type="resource" xlink:label="label_PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority, 5.00%, 07/01/2037</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" xlink:to="label_PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="#xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" xlink:label="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember"/><link:label xlink:type="resource" xlink:label="label_PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority, 5.00%, 07/01/2028</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" xlink:to="label_PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="NoTradingSymbolFlag"/><link:label xlink:type="resource" xlink:label="label_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">No Trading Symbol [Flag]</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoTradingSymbolFlag" xlink:to="label_NoTradingSymbolFlag" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNet" xlink:label="AssetsNet"/><link:label xlink:type="resource" xlink:label="label_AssetsNet" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">AssetsNet</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="label_AssetsNet" priority="1"/><link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentCompanyPortfolioTurnover" xlink:label="InvestmentCompanyPortfolioTurnover"/><link:label xlink:type="resource" xlink:label="label_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">InvestmentCompanyPortfolioTurnover</link:label><link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentCompanyPortfolioTurnover" xlink:to="label_InvestmentCompanyPortfolioTurnover" priority="1"/></link:labelLink></link:linkbase></appinfo></annotation><element name="C000234742Member" id="xsc_C000234742Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="BloombergMunicipalBondIndex1582AdditionalIndexMember" id="xsc_BloombergMunicipalBondIndex1582AdditionalIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" id="xsc_BloombergMunicipalBondHighYieldnonMinusInvestmentGradeIndex1582AdditionalIndexMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="A1Minus3YearsCTIMember" id="xsc_A1Minus3YearsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="A5Minus10YearsCTIMember" id="xsc_A5Minus10YearsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="A10YearsCTIMember" id="xsc_A10YearsCTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" id="xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue478407012058CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CommonwealthofPuertoRico40007012035CTIMember" id="xsc_CommonwealthofPuertoRico40007012035CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" id="xsc_PuertoRicoSalesTaxFinancingCorpSalesTaxRevenue432907012040CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" id="xsc_MatchingFundSpecialPurposeSecuritizationCorp50010012039CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CommonwealthofPuertoRico40007012037CTIMember" id="xsc_CommonwealthofPuertoRico40007012037CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CommonwealthofPuertoRico562507012027CTIMember" id="xsc_CommonwealthofPuertoRico562507012027CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" id="xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012047CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="CommonwealthofPuertoRico57507012031CTIMember" id="xsc_CommonwealthofPuertoRico57507012031CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" id="xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012037CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/><element name="PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" id="xsc_PuertoRicoCommonwealthAqueductSewerAuthority50007012028CTIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/></schema>
