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This feature is only available in Spain and limited to certain acquirers.

Plazox is a Spanish banking service that allows customers to instantly split credit card purchases exceeding a configurable amount into 3, 6, 9, or 12 installments directly at the point of sale (POS) or online.

This feature can only be used if your account has been enabled with the respective service.

To utilize Plazox on a terminal that connects to the Gateway using the nexo acquirer protocol (v6), the following steps must be performed.

To retrieve the eligible installment plans from the Gateway, the terminal does not need to include any special indicator in the sale request (using AccptrAuthstnReq). Means, the sale request looks identical to any other request for a sale transaction.

The Gateway sends the sale response (using AccptrAuthstnRspn) to the terminal.

FieldPresenceValue
RspnToAuthstn/RspnM'APPR' - Transaction approved, Plazox not offered
'DECL' & RC != Z0 - Transaction declined, Plazox NOT offered
'DECL' and RC = Z0 - Transaction soft declined, Plazox offered
TxRspn/AuthstnRslt/RspnToAuthstn/AddtlRspnInfCContains the following string: '/InstallmentPlanQueryResult'
ActnCNot present if RspnToAuthstn/Rspn='DECL' & RC != Z0

One occurrence per eligible installment plan with:
ActnTp='DISP'
MsgToPres/MsgDstn='CDSP'
MsgToPres/Frmt='TEXT'
MsgToPres/MsgCntt= see below JSON structure

JSON structure:

Subfield of MsgToPres/MsgCnttDescriptionTypeExample
installmentPlanInquiryIdGateway internal reference to the plan. Needs to be used in second sale request to chose an installment planstring, max length 50asfff617-c2c7-03f0
installmentProviderService provider of the installment plans. In case of Plazox the value will be 'Plazox'string, max length 10Plazox
planDetails.totalAmountIncludingFeesTotal amount including all fees for the entire lifecycle of the installmentsnumber, max length 15, decimal places depending on 'Currency'300.50
planDetails.numberOfInstallmentsNumber of installments (tenure)number, fixed length 40006
planDetails.installmentFrequencyFrequency of the installmentsenum

Possible values:
monthly
monthly
planDetails.annualInterestRateTAE, Interest rate per year (in percentage)number, max length 55.4
planDetails.currencyCurrency of amountsISO 4217 - currency codeEUR
planDetails.rateAmountRecurring installment amountnumber, max length 15, decimal places depending on 'Currency'50.00
planDetails.firstRateAmountAmount of first amount, can be differentnumber, max length 15, decimal places depending on 'Currency'50.50

Example:

{
"installmentPlanInquiryId":"asfff617-c2c7-03f0",
"installmentProvider":"Plazox",
"planDetails":{
  "totalAmountIncludingFees":300.50,
  "numberOfInstallments":"0006",
  "installmentFrequency":"monthly",
  "annualInterestRate":5.4,
  "currency":"EUR",
  "rateAmount":50.00,
  "firstRateAmount":50.50
}

Terminal displays the available installment plans to the customer.


Terminal sends a second sale request (using AccptrAuthstnReq) to IPG:

  • With a reference to the first sale request.
  • If a plan was accepted by the customer, the 'installmentPlanInquiryId' must be added to the second sale request in AddtlTxData.
  • If no plan was accepted by the customer, 'installmentPlanInquiryId' must not be sent in the second sale request.
  • If first leg transaction contained an online PIN block, also the second leg transaction must contain a PIN block. It is possible to use the same encrypted structure (NcrptdPINBlck) as for the first sale request, so it is not necessary to ask the customer for the PIN again.
FieldPresenceValue
Tx/TxCaptrMtrue
Tx/TxIdMNew transaction reference, different to the first sale request
OrgnlTxCReference to first leg transaction. Contains the Tx/TxId.
Alternatively, you can include SaleRefId containing the 'Order ID'.
SaleRefIdCReference to first leg transaction. Alternatively, you can include OrgnlTx containing the Tx/TxId.
AddtlTxDataC/installment/Plazox/installmentPlanInquiryId/{id}
(value for {id} to be used from the 1st sale response)
ICCRltdDataMIn case the card was read contactless during 1st sale transaction, then use the same EMV data from 1st sale.
In case the card was read in contact mode during 1st sale, then send new EMV data. Card must be read again.
NcrptdPINBlckMContains the encrypted value of the PIN from new sale request

Example:

<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns:AcceptorAuthorisationRequest="urn:iso:std:iso:20022:tech:xsd:caaa.001.001.06" xmlns="urn:iso:std:iso:20022:tech:xsd:caaa.001.001.06" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <AccptrAuthstnReq>
        <Hdr>
            <MsgFctn>FAUQ</MsgFctn>
            <PrtcolVrsn>6.0</PrtcolVrsn>
            <XchgId>32</XchgId>
            <CreDtTm>2026-04-14T17:54:19.592+04:00</CreDtTm>
            <InitgPty>
                <Id>xxxx</Id>
                <Tp>OPOI</Tp>
            </InitgPty>
        </Hdr>
        <AuthstnReq>
            <Envt>
                <Acqrr>
                    <Id>
                        <Id>1</Id>
                    </Id>
                    <ParamsVrsn>20110913123456</ParamsVrsn>
                </Acqrr>
                <Mrchnt>
                    <Id>
                        <Id>760076309876</Id>
                    </Id>
                    <CmonNm>Plazox test merchant</CmonNm>
                </Mrchnt>
                <POI>
                    <Id>
                        <Id>12345678</Id>
                        <Tp>OPOI</Tp>
                    </Id>
                    <GrpId>xxxxxxxxxxxx</GrpId>
                    <Cpblties>
                        <CardRdngCpblties>PHYS</CardRdngCpblties>
                        <CardRdngCpblties>MGST</CardRdngCpblties>
                        <CardRdngCpblties>CICC</CardRdngCpblties>
                        <CardRdngCpblties>CTLS</CardRdngCpblties>
                        <CardRdngCpblties>ECTL</CardRdngCpblties>
                        <CrdhldrVrfctnCpblties>FCPN</CrdhldrVrfctnCpblties>
                        <CrdhldrVrfctnCpblties>NPIN</CrdhldrVrfctnCpblties>
                        <CrdhldrVrfctnCpblties>OTHR</CrdhldrVrfctnCpblties>
                        <CrdhldrVrfctnCpblties>FEPN</CrdhldrVrfctnCpblties>
                        <ApprvlCdLngth>6</ApprvlCdLngth>
                        <OnLineCpblties>SMON</OnLineCpblties>
                        <MsgCpblties>
                            <Dstn>MDSP</Dstn>
                            <AvlblFrmt>TEXT</AvlblFrmt>
                            <NbOfLines>4</NbOfLines>
                            <LineWidth>32</LineWidth>
                            <AvlblLang>en</AvlblLang>
                            <AvlblLang>fr</AvlblLang>
                            <AvlblLang>nl</AvlblLang>
                            <AvlblLang>de</AvlblLang>
                            <AvlblLang>sv</AvlblLang>
                            <AvlblLang>pl</AvlblLang>
                            <AvlblLang>cs</AvlblLang>
                        </MsgCpblties>
                        <MsgCpblties>
                            <Dstn>MRCP</Dstn>
                            <AvlblFrmt>TEXT</AvlblFrmt>
                            <NbOfLines>4</NbOfLines>
                            <LineWidth>32</LineWidth>
                            <AvlblLang>en</AvlblLang>
                            <AvlblLang>fr</AvlblLang>
                            <AvlblLang>nl</AvlblLang>
                            <AvlblLang>de</AvlblLang>
                            <AvlblLang>sv</AvlblLang>
                            <AvlblLang>pl</AvlblLang>
                            <AvlblLang>cs</AvlblLang>
                        </MsgCpblties>
                    </Cpblties>
                    <Cmpnt>
                        <Tp>TERM</Tp>
                        <Id>
                            <PrvdrId>TerminalPAY</PrvdrId>
                            <Id>NEXO ANDROID PAYMENT APPLICATION</Id>
                            <SrlNb>1853691107</SrlNb>
                        </Id>
                    </Cmpnt>
                    <Cmpnt>
                        <Tp>APLI</Tp>
                        <Id>
                            <PrvdrId>VendorXYZ</PrvdrId>
                            <Id>NEXO PAYMENT APPLICATION</Id>
                        </Id>
                        <Sts>
                            <VrsnNb>1.6.108</VrsnNb>
                        </Sts>
                        <StdCmplc>
                            <Id>SEPA-FAST</Id>
                            <Vrsn>3.1</Vrsn>
                            <Issr>OSCAR</Issr>
                        </StdCmplc>
                        <Assmnt>
                            <Tp>CERT</Tp>
                            <Assgnr>OSCAR</Assgnr>
                            <Nb>ToComplete(giveByPayCert)</Nb>
                        </Assmnt>
                    </Cmpnt>
                </POI>
                <Card>
                    <PrtctdCardData>
                        <CnttTp>EVLP</CnttTp>
                        <EnvlpdData>
                            <Rcpt>
                                <KEK>
                                    <KEKId>
                                        <KeyId>SredTestKey</KeyId>
                                        <KeyVrsn>2016051911</KeyVrsn>
                                        <DerivtnId>EAM5AAA=</DerivtnId>
                                    </KEKId>
                                    <KeyNcrptnAlgo>
                                        <Algo>DKP9</Algo>
                                    </KeyNcrptnAlgo>
                                    <NcrptdKey>xxxxxxx</NcrptdKey>
                                </KEK>
                            </Rcpt>
                            <NcrptdCntt>
                                <CnttTp>DATA</CnttTp>
                                <CnttNcrptnAlgo>
                                    <Algo>E3DC</Algo>
                                </CnttNcrptnAlgo>
                                <NcrptdData>D028qine5XgDnx22ggaKrX+sjIcniSLLVxJLVVkSJt73gpRSQlcySIUsFcY4cKOHC3IBqO1wGL7lBMmhEXOJn1WG3wwxIh7GWggxo2jzKmRp+XkHZ3zLG/DSWBXFQhpMT5Wi8WkDRH5OHa8PtbHKe4WMrG5RfLuQflEOS6TQKrqaBsfVMa7qcDb7tSgFnnnPE04nodzOrQ6Q4F2GFWjGnRLyYBAXSAGbDOS1HN5XXnWj2OY3uioB5Bij8z/d4kMgBLfAD/4S7KQGwjMsDNVVoPymCC3cK8HmnjrRt25PCUaQqhbwUgmRNL+y7whHBNCPtdMfU0S2Nrl0PqqCTgtcjZtIRL9P7454fpMezMFZ5W0=</NcrptdData>
                            </NcrptdCntt>
                        </EnvlpdData>
                    </PrtctdCardData>
                    <IssrBIN>403337</IssrBIN>
                    <CardCtryCd>784</CardCtryCd>
                    <CardPdctPrfl>V</CardPdctPrfl>
                    <CardBrnd>V</CardBrnd>
                </Card>
                <Crdhldr>
                    <Lang>en</Lang>
                    <Authntcn>
                        <AuthntcnMtd>NPIN</AuthntcnMtd>
                        <CrdhldrOnLinePIN>
                            <NcrptdPINBlck>
                                <CnttTp>EVLP</CnttTp>
                                <EnvlpdData>
                                    <Rcpt>
                                        <KEK>
                                            <KEKId>
                                                <KeyId>PinTestKey</KeyId>
                                                <KeyVrsn>2016051911</KeyVrsn>
                                                <DerivtnId>EAM6AAA=</DerivtnId>
                                            </KEKId>
                                            <KeyNcrptnAlgo>
                                                <Algo>DKP9</Algo>
                                            </KeyNcrptnAlgo>
                                            <NcrptdKey>xxxxxxx</NcrptdKey>
                                        </KEK>
                                    </Rcpt>
                                    <NcrptdCntt>
                                        <CnttTp>DATA</CnttTp>
                                        <CnttNcrptnAlgo>
                                            <Algo>E3DC</Algo>
                                        </CnttNcrptnAlgo>
                                        <NcrptdData>XXXXXXXXXXXX</NcrptdData>
                                    </NcrptdCntt>
                                </EnvlpdData>
                            </NcrptdPINBlck>
                            <PINFrmt>ISO0</PINFrmt>
                        </CrdhldrOnLinePIN>
                    </Authntcn>
                </Crdhldr>
            </Envt>
            <Cntxt>
                <PmtCntxt>
                    <CardPres>true</CardPres>
                    <CrdhldrPres>true</CrdhldrPres>
                    <AttndncCntxt>ATTD</AttndncCntxt>
                    <CardDataNtryMd>ECTL</CardDataNtryMd>
                </PmtCntxt>
                <SaleCntxt/>
            </Cntxt>
            <Tx>
                <TxCaptr>true</TxCaptr>
                <TxTp>CRDP</TxTp>
                <MrchntCtgyCd>7011</MrchntCtgyCd>
                <CstmrCnsnt>false</CstmrCnsnt>
                <TxId>
                    <TxDtTm>2026-04-14T17:54:19.592+04:00</TxDtTm>
                    <TxRef>123456</TxRef>
                </TxId>
                <RcncltnId>336</RcncltnId>
                <TxDtls>
                    <Ccy>EUR</Ccy>
                    <TtlAmt>556.87</TtlAmt>
                    <AmtQlfr>ACTL</AmtQlfr>
                    <DtldAmt>
                        <AmtGoodsAndSvcs>556.87</AmtGoodsAndSvcs>
                    </DtldAmt>
                    <OnLineRsn>TRMF</OnLineRsn>
                    <ICCRltdData>{emv-tags}</ICCRltdData>
              </TxDtls>
	     <AddtlTxData>/installment/Plazox/installmentPlanInquiryId/asfff617-c2c7-03f0</AddtlTxData>
            </Tx>
        </AuthstnReq>
        <SctyTrlr>
            <CnttTp>AUTH</CnttTp>
            <AuthntcdData>
                <Rcpt>
                    <KEK>
                        <KEKId>
                            <KeyId>MacTestKey</KeyId>
                            <KeyVrsn>2026041417</KeyVrsn>
                            <DerivtnId>EAM7AAA=</DerivtnId>
                        </KEKId>
                        <KeyNcrptnAlgo>
                            <Algo>DKP9</Algo>
                        </KeyNcrptnAlgo>
                        <NcrptdKey>xxxxxx</NcrptdKey>
                    </KEK>
                </Rcpt>
                <MACAlgo>
                    <Algo>MCCS</Algo>
                </MACAlgo>
                <NcpsltdCntt>
                    <CnttTp>DATA</CnttTp>
                </NcpsltdCntt>
                <MAC>oNRYbwt+Cfk=</MAC>
            </AuthntcdData>
        </SctyTrlr>
    </AccptrAuthstnReq>
</Document>

The Gateway sends the sale response (using AccptrAuthstnRspn) to the second leg transaction to the terminal.
The response will include the final details of the chosen installment plan. This allows the terminal to use the details for receipt printing. The details related to the chosen installment plan will be included in the same format as they were included in the first leg response. In addition, the response will include the fee and fee type.

FieldPresenceValue
RspnToAuthstn/RspnM'APPR' - Transaction approved, Chosen installment plan was accepted
'DECL' - Transaction was declined
ActnCNot present if RspnToAuthstn/Rspn='DECL'

One occurrence per eligible installment plan with:
ActnTp='DISP'
MsgToPres/MsgDstn='CDSP'
MsgToPres/Frmt='TEXT'
MsgToPres/MsgCntt= see below JSON structure

JSON structure:

Subfield of MsgToPres/MsgCnttDescriptionTypeExample
totalFeeFee applied by issuerstring12
feeTypeFee type applied by issuerenum
Possible values: NO_FEE
FIXED
PERCENTAGE
PRECENTAGE_DISTRIBUTED
FIXED

Example:

"selectedInstallmentPlan": {
  "installmentPlanId": "6aba19b5-4bf8-72fe-4bd6-19ccea7fd302",
  "provider": "PLAZOX",
  "monthlyTenure": 6,
  "interestRate": 1,
  "currency": "EUR",
  "amountPerMonth": 50.00,
  "totalAmount": 300.50,
  "AmountFirstInstallment": 50.50
  "totalFee":"12"
  "feeType": "FIXED"
  }

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