Iso20022

AcceptorCurrencyConversionResponseV08

caaa.017.001.08

The AcceptorCurrencyConversionResponse message is sent by currency conversion service provider to the card acceptor to return the result of a potential currency conversion for the cardholder.

Message Construction

Every ISO20022 message has at the highest level what we call ‘building blocks’. Because the message is constructed as immutable records, the association is by composition. Below you can see the relationship between the message and its constituent building blocks: For comparison, see the ISO20022 official specification

classDiagram
     direction LR
%% AcceptorCurrencyConversionResponseV08 recursion level 0 with max 0
AcceptorCurrencyConversionResponseV08 *-- "1..1" Header59 : Header
AcceptorCurrencyConversionResponseV08 *-- "1..1" AcceptorCurrencyConversionResponse8 : CurrencyConversionResponse
AcceptorCurrencyConversionResponseV08 *-- "0..1" ContentInformationType27 : SecurityTrailer

Now, we will zero-in one-by-one on each of these building blocks.

Header building block

Currency conversion response message management information. Set of characteristics related to the protocol. For comparison, see the ISO20022 official specification

classDiagram
   direction tb
%% Header59 recursion level 0 with max 1
class Header59{
    MessageFunction MessageFunction42Code
    ProtocolVersion IsoMax6Text
    ExchangeIdentification IsoNumber
    ReTransmissionCounter IsoMax3NumericText
    CreationDateTime IsoISODateTime
}
Header59 *-- "1..1" GenericIdentification176 : InitiatingParty
Header59 *-- "0..1" GenericIdentification177 : RecipientParty
Header59 *-- "0..0" Traceability8 : Traceability
%% GenericIdentification176 recursion level 1 with max 1
class GenericIdentification176{
    Identification IsoMax35Text
    Type PartyType33Code
    Issuer PartyType33Code
    Country IsoMin2Max3AlphaText
    ShortName IsoMax35Text
}
%% GenericIdentification177 recursion level 1 with max 1
class GenericIdentification177{
    Identification IsoMax35Text
    Type PartyType33Code
    Issuer PartyType33Code
    Country IsoMin2Max3AlphaText
    ShortName IsoMax35Text
}
GenericIdentification177 *-- "0..1" NetworkParameters7 : RemoteAccess
GenericIdentification177 *-- "0..1" Geolocation1 : Geolocation
%% Traceability8 recursion level 1 with max 1
class Traceability8{
    ProtocolName IsoMax35Text
    ProtocolVersion IsoMax6Text
    TraceDateTimeIn IsoISODateTime
    TraceDateTimeOut IsoISODateTime
}
Traceability8 *-- "1..1" GenericIdentification177 : RelayIdentification

Header59 members

Member name Description Data Type / Multiplicity
MessageFunction Identifies the type of process related to the message. MessageFunction42Code - Required 1..1
ProtocolVersion Version of the acquirer protocol specifications. IsoMax6Text - Required 1..1
ExchangeIdentification Unique identification of an exchange occurrence. IsoNumber - Required 1..1
ReTransmissionCounter Number of retransmissions of the message. IsoMax3NumericText - Optional 0..1
CreationDateTime Date and time at which the message was created. IsoISODateTime - Required 1..1
InitiatingParty Unique identification of the partner that has initiated the exchange. GenericIdentification176 - Required 1..1
RecipientParty Unique identification of the partner that is the recipient of the message exchange. GenericIdentification177 - Optional 0..1
Traceability Identification of partners involved in exchange from the merchant to the issuer, with the relative timestamp of their exchanges. Traceability8 - Unknown 0..0

CurrencyConversionResponse building block

Information related to the outcome of the currency conversion. Currency conversion outcome from the service provider. For comparison, see the ISO20022 official specification

classDiagram
   direction tb
%% AcceptorCurrencyConversionResponse8 recursion level 0 with max 1
AcceptorCurrencyConversionResponse8 *-- "1..1" CardPaymentEnvironment77 : Environment
AcceptorCurrencyConversionResponse8 *-- "1..1" CardPaymentTransaction111 : Transaction
AcceptorCurrencyConversionResponse8 *-- "1..1" CurrencyConversion22 : CurrencyConversionResult
%% CardPaymentEnvironment77 recursion level 1 with max 1
CardPaymentEnvironment77 *-- "0..1" Acquirer10 : Acquirer
CardPaymentEnvironment77 *-- "0..1" Organisation41 : Merchant
CardPaymentEnvironment77 *-- "0..1" PointOfInteraction11 : POI
CardPaymentEnvironment77 *-- "0..1" PaymentCard31 : Card
CardPaymentEnvironment77 *-- "0..1" Check1 : Check
CardPaymentEnvironment77 *-- "0..0" StoredValueAccount2 : StoredValueAccount
CardPaymentEnvironment77 *-- "0..0" LoyaltyAccount2 : LoyaltyAccount
CardPaymentEnvironment77 *-- "0..1" CustomerDevice3 : CustomerDevice
CardPaymentEnvironment77 *-- "0..1" CustomerDevice3 : Wallet
CardPaymentEnvironment77 *-- "0..1" Token1 : PaymentToken
CardPaymentEnvironment77 *-- "0..1" MerchantToken1 : MerchantToken
CardPaymentEnvironment77 *-- "0..1" Cardholder17 : Cardholder
CardPaymentEnvironment77 *-- "0..1" ContentInformationType28 : ProtectedCardholderData
CardPaymentEnvironment77 *-- "0..1" RetailerSaleEnvironment2 : SaleEnvironment
%% CardPaymentTransaction111 recursion level 1 with max 1
class CardPaymentTransaction111{
    SaleReferenceIdentification IsoMax35Text
    InitiatorTransactionIdentification IsoMax35Text
    RecipientTransactionIdentification IsoMax140Text
    ReconciliationIdentification IsoMax35Text
    InterchangeData IsoMax140Text
    MerchantReferenceData IsoMax70Text
}
CardPaymentTransaction111 *-- "1..1" TransactionIdentifier1 : TransactionIdentification
CardPaymentTransaction111 *-- "1..1" CardPaymentTransactionDetails49 : TransactionDetails
%% CurrencyConversion22 recursion level 1 with max 1
class CurrencyConversion22{
    Result CurrencyConversionResponse3Code
    ResultReason IsoMax35Text
}
CurrencyConversion22 *-- "0..0" CurrencyConversion20 : ConversionDetails

AcceptorCurrencyConversionResponse8 members

Member name Description Data Type / Multiplicity
Environment Environment of the transaction. CardPaymentEnvironment77 - Required 1..1
Transaction Currency conversion of a card payment transaction between an acceptor and an acquirer. CardPaymentTransaction111 - Required 1..1
CurrencyConversionResult Details of the currency conversion. CurrencyConversion22 - Required 1..1

SecurityTrailer building block

Trailer of the message containing a MAC (message authentication code). General cryptographic message syntax (CMS) containing authenticated data. For comparison, see the ISO20022 official specification

classDiagram
   direction tb
%% ContentInformationType27 recursion level 0 with max 1
class ContentInformationType27{
    ContentType ContentType2Code
}
ContentInformationType27 *-- "1..1" AuthenticatedData7 : AuthenticatedData
%% AuthenticatedData7 recursion level 1 with max 1
class AuthenticatedData7{
    Version IsoNumber
    MAC IsoMax140Binary
}
AuthenticatedData7 *-- "1..0" IRecipient10Choice : Recipient
AuthenticatedData7 *-- "1..1" AlgorithmIdentification22 : MACAlgorithm
AuthenticatedData7 *-- "1..1" EncapsulatedContent3 : EncapsulatedContent

ContentInformationType27 members

Member name Description Data Type / Multiplicity
ContentType Type of data protection. ContentType2Code - Required 1..1
AuthenticatedData Data protection by a message authentication code (MAC). AuthenticatedData7 - Required 1..1

Extensibility and generalization considerations

To facilitate generalized design patterns in the system, the AcceptorCurrencyConversionResponseV08 implementation follows a specific implementaiton pattern. First of all, AcceptorCurrencyConversionResponseV08 impleemnts IOuterRecord indicating it is the outermost logical part of the message definition. Like all message wrappers, AcceptorCurrencyConversionResponseV08Document implements IOuterDocument. Because AcceptorCurrencyConversionResponseV08 implements IOuterDocument, it is a suitable template parameter for IOuterDocument, and causes the internal ‘Message’ to be of type AcceptorCurrencyConversionResponseV08.

classDiagram
    class IOuterRecord
    AcceptorCurrencyConversionResponseV08 --|> IOuterRecord : Implements
    AcceptorCurrencyConversionResponseV08Document --|> IOuterDocument~AcceptorCurrencyConversionResponseV08~ : Implements
    class IOuterDocument~AcceptorCurrencyConversionResponseV08~ {
        AcceptorCurrencyConversionResponseV08 Message
     }

Document wrapper for serialization

The only real purpose AcceptorCurrencyConversionResponseV08Document serves is to cause the document to be serialized into the ‘urn:iso:std:iso:20022:tech:xsd:caaa.017.001.08’ namespace. Therefore, it will probably be the usual practice to build the message and construct this wrapper at the last minute using AcceptorCurrencyConversionResponseV08.ToDocument() method. The returned AcceptorCurrencyConversionResponseV08Document value will serialize correctly according to ISO 20022 standards.

classDiagram
    AcceptorCurrencyConversionResponseV08Document *-- AcceptorCurrencyConversionResponseV08 : Document

Sample of message format

This is an abbreviated version of what the message should look like.

<Document xmlns="urn:iso:std:iso:20022:tech:xsd:caaa.017.001.08">
    <AccptrCcyConvsRspn>
        <Hdr>
            <!-- Header inner content -->
        </Hdr>
        <CcyConvsRspn>
            <!-- CurrencyConversionResponse inner content -->
        </CcyConvsRspn>
        <SctyTrlr>
            <!-- SecurityTrailer inner content -->
        </SctyTrlr>
    </AccptrCcyConvsRspn>
</Document>

Data from ISO specification

This is the technical data from the specification document.

<messageDefinition
  xmi:id="_0RQ-oS5IEeunNvJlR_vCbg"
  nextVersions="_b-b8QU4DEey_VecAUE-C9Q"
  previousVersion="_Uv_E0QujEeqw5uEXxQ9H4g"
  name="AcceptorCurrencyConversionResponseV08"
  definition="The AcceptorCurrencyConversionResponse message is sent by currency conversion service provider to the card acceptor to return the result of a potential currency conversion for the cardholder.&#xD;&#xA;"
  registrationStatus="Registered"
  messageSet="_urpIICeJEeOCeO5e7islRQ"
  xmlTag="AccptrCcyConvsRspn"
  rootElement="Document"
  xmlns:xmi="http://www.omg.org/XMI">
  <doclet
    xmi:id="_0RQ-oy5IEeunNvJlR_vCbg"
    type="purpose" />
  <messageBuildingBlock
    xmi:id="_0RQ-pS5IEeunNvJlR_vCbg"
    nextVersions="_b-b8RU4DEey_VecAUE-C9Q"
    previousVersion="_Uv_E1QujEeqw5uEXxQ9H4g"
    name="Header"
    definition="Currency conversion response message management information."
    registrationStatus="Provisionally Registered"
    maxOccurs="1"
    minOccurs="1"
    xmlTag="Hdr"
    complexType="_Rz5m4S_aEeugIJ3Gvoevmg" />
  <messageBuildingBlock
    xmi:id="_0RQ-py5IEeunNvJlR_vCbg"
    nextVersions="_b-b8R04DEey_VecAUE-C9Q"
    previousVersion="_Uv_E1wujEeqw5uEXxQ9H4g"
    name="CurrencyConversionResponse"
    definition="Information related to the outcome of the currency conversion."
    registrationStatus="Provisionally Registered"
    maxOccurs="1"
    minOccurs="1"
    xmlTag="CcyConvsRspn"
    complexType="_wNrNYS5IEeunNvJlR_vCbg" />
  <messageBuildingBlock
    xmi:id="_0RQ-qS5IEeunNvJlR_vCbg"
    nextVersions="_b-b8SU4DEey_VecAUE-C9Q"
    previousVersion="_Uv_E2QujEeqw5uEXxQ9H4g"
    name="SecurityTrailer"
    definition="Trailer of the message containing a MAC (message authentication code)."
    registrationStatus="Provisionally Registered"
    maxOccurs="1"
    minOccurs="0"
    xmlTag="SctyTrlr"
    complexType="_2S4usS8lEeu125Ip9zFcsQ" />
  <messageDefinitionIdentifier
    businessArea="caaa"
    messageFunctionality="017"
    flavour="001"
    version="08" />
</messageDefinition>

ISO Building Blocks

The following items are used as building blocks to construct this message.