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<xs:schema xmlns:gpispa="http://gpispa.com/xbrl/2022" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" targetNamespace="http://gpispa.com/xbrl/2022" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <xs:import schemaLocation="http://www.esma.europa.eu/taxonomy/2021-03-24/esef_cor.xsd" namespace="http://www.esma.europa.eu/taxonomy/2021-03-24/esef_cor" />
  <xs:import schemaLocation="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd" namespace="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" />
  <xs:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
  <xs:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="815600320CCB55749A30-2022-12-31_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="815600320CCB55749A30-2022-12-31_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="815600320CCB55749A30-2022-12-31_lab-it.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="815600320CCB55749A30-2022-12-31_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="http://www.esma.europa.eu/taxonomy/2021-03-24/esef_cor-lab-it.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="http://www.esma.europa.eu/taxonomy/2021-03-24/esef_cor-gen-it.xml" xlink:type="simple" />
      <link:roleType id="Anchoring" roleURI="http://gpispa.com/xbrl/2022/roles/Anchoring">
        <link:definition>99 - Groups all anchored elements</link:definition>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ProspettoDellaSituazionePatrimonialeFinanziaria" roleURI="http://gpispa.com/xbrl/2022/roles/ProspettoDellaSituazionePatrimonialeFinanziaria">
        <link:definition>01 - Prospetto della situazione patrimoniale-finanziaria</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UtileOPerdita" roleURI="http://gpispa.com/xbrl/2022/roles/UtileOPerdita">
        <link:definition>02 - Utile o perdita</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ProspettoDiContoEconomicoComplessivo" roleURI="http://gpispa.com/xbrl/2022/roles/ProspettoDiContoEconomicoComplessivo">
        <link:definition>03 - Prospetto di conto economico complessivo</link:definition>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ProspettoDelleVariazioniDiPatrimonioNetto" roleURI="http://gpispa.com/xbrl/2022/roles/ProspettoDelleVariazioniDiPatrimonioNetto">
        <link:definition>04 - Prospetto delle variazioni di patrimonio netto</link:definition>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RendicontoFinanziario" roleURI="http://gpispa.com/xbrl/2022/roles/RendicontoFinanziario">
        <link:definition>05 - Rendiconto finanziario</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesAndMandatoryItems" roleURI="http://gpispa.com/xbrl/2022/roles/NotesAndMandatoryItems">
        <link:definition>06 - Notes and Mandatory Items</link:definition>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
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  <xs:element id="gpispa_CurrentReceivablesFromContractsWithClients" xbrli:balance="debit" xbrli:periodType="instant" name="CurrentReceivablesFromContractsWithClients" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_CurrentFinancialAsset" xbrli:balance="debit" xbrli:periodType="instant" name="CurrentFinancialAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
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  <xs:element id="gpispa_LiabilitiesFromContractsWithClients" xbrli:balance="credit" xbrli:periodType="instant" name="LiabilitiesFromContractsWithClients" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_FinancialLiabilitiesCurrent" xbrli:balance="credit" xbrli:periodType="instant" name="FinancialLiabilitiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_Revenues" xbrli:balance="credit" xbrli:periodType="duration" name="Revenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_OthersIncome" xbrli:balance="credit" xbrli:periodType="duration" name="OthersIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_ServicesCosts" xbrli:balance="debit" xbrli:periodType="duration" name="ServicesCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_OtherProvision" xbrli:balance="debit" xbrli:periodType="duration" name="OtherProvision" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_ResultOfFinancialOperations" xbrli:balance="credit" xbrli:periodType="duration" name="ResultOfFinancialOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_ProfitLossMember" xbrli:periodType="duration" abstract="true" name="ProfitLossMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" />
  <xs:element id="gpispa_AltreOperazioniConSoci" xbrli:balance="credit" xbrli:periodType="duration" name="AltreOperazioniConSoci" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_TotaleOperazioniConSoci" xbrli:balance="credit" xbrli:periodType="duration" name="TotaleOperazioniConSoci" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_AltriMovimenti" xbrli:balance="credit" xbrli:periodType="duration" name="AltriMovimenti" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_DepreciationOfPropertyPlantAndEquipment" xbrli:balance="debit" xbrli:periodType="duration" name="DepreciationOfPropertyPlantAndEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_DepreciationOfIntangibleAsset" xbrli:balance="debit" xbrli:periodType="duration" name="DepreciationOfIntangibleAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_AmortisationOfAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers" xbrli:balance="debit" xbrli:periodType="duration" name="AmortisationOfAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_AdjustmentForProvisions" xbrli:balance="debit" xbrli:periodType="duration" name="AdjustmentForProvisions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_AdjustmentForFinancialOperations" xbrli:balance="debit" xbrli:periodType="duration" name="AdjustmentForFinancialOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_AdjustmentForTaxesOfThePeriod" xbrli:balance="debit" xbrli:periodType="duration" name="AdjustmentForTaxesOfThePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_RepaymentsOfBonds" xbrli:balance="credit" xbrli:periodType="duration" name="RepaymentsOfBonds" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_OpeningsOfLeaseDebts" xbrli:balance="debit" xbrli:periodType="duration" name="OpeningsOfLeaseDebts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_ChangesInPayablesForThePurchaseOfEquityInvestments" xbrli:balance="debit" xbrli:periodType="duration" name="ChangesInPayablesForThePurchaseOfEquityInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_DisponibilitaLiquideEMezziEquivalentiIniziali" xbrli:balance="credit" xbrli:periodType="instant" name="DisponibilitaLiquideEMezziEquivalentiIniziali" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_DisponibilitaLiquideEMezziEquivalentiFinali" xbrli:balance="credit" xbrli:periodType="instant" name="DisponibilitaLiquideEMezziEquivalentiFinali" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" />
  <xs:element id="gpispa_DisclosureOfMainAcquisitionAndCorporateOperations" xbrli:periodType="duration" name="DisclosureOfMainAcquisitionAndCorporateOperations" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" />
  <xs:element id="gpispa_DisclosureOfFinancialAssets" xbrli:periodType="duration" name="DisclosureOfFinancialAssets" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" />
  <xs:element id="gpispa_DisclosureOfCustomerAcquisitionCosts" xbrli:periodType="duration" name="DisclosureOfCustomerAcquisitionCosts" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" />
  <xs:element id="gpispa_DisclosureOfRecognitionRevenue" xbrli:periodType="duration" name="DisclosureOfRecognitionRevenue" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" />
  <xs:element id="gpispa_DisclosureOfNetAssets" xbrli:periodType="duration" name="DisclosureOfNetAssets" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" />
  <xs:element id="gpispa_DiscolsureOfFinancialLiabilities" xbrli:periodType="duration" name="DiscolsureOfFinancialLiabilities" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" />
</xs:schema>