What is the latest version of caaa.021?

The latest version in the ISO 20022 e-Repository release of 24 April 2025 is caaa.021.001.06.

What is the root element of caaa.021?

The XML document is Document with the namespace urn:iso:std:iso:20022:tech:xsd:caaa.021.001.06, and its message element is TxAdvcRspn (TransactionAdviceResponse).

Is there an MT equivalent of caaa.021?

No Swift MT message is listed as its direct equivalent on this site. Many ISO 20022 messages have no MT counterpart.

caaa: Acceptor to Acquirer Card Transaction

caaa.021 Transaction Advice Response

Written and maintained by ZagTrader. Last reviewed 21 October 2026. How this page is sourced and checked

caaa.021 is the ISO 20022 TransactionAdviceResponse message in the Acceptor to Acquirer Card Transaction business area (caaa). The latest version is caaa.021.001.06, and 6 versions are in the repository.

Message: TransactionAdviceResponse
Latest version: caaa.021.001.06
Submitting organisation: nexo
MT equivalent: None listed

In use: published in the current ISO 20022 catalogue.

What caaa.021 is for

The TransactionAdviceResponse message is sent by the POI to acknowledge the Acquirer (or its agent) about the notification of the transaction advice.

Definition from the ISO 20022 e-Repository, release of 24 April 2025.

caaa.021 versions

Every version published in the e-Repository, newest first. A message keeps its business purpose across versions; each new version is a separate schema with its own namespace.

Version	Registration status	Published in
caaa.021.001.06latest	Registered	Latest version set
caaa.021.001.05	Registered	Previous version set
caaa.021.001.04	Registered	Archive
caaa.021.001.03	Registered	Archive
caaa.021.001.02	Registered	Archive
caaa.021.001.01	Registered	Archive

caaa.021 message structure

The building blocks of caaa.021.001.06 to three levels, with multiplicity ([0..1] optional, [1..1] mandatory, * any number) and the data type or component. Element names and definitions are from the ISO 20022 repository; usage guidelines such as CBPR+ or a market infrastructure's rules can restrict them further.

Document [1..1]
- TxAdvcRspn TransactionAdviceResponse [1..1]
  - Hdr Header [1..1]Header70
    Completion advice message management information.
    - MsgFctn Message Function [1..1]MessageFunction46Code
      Identifies the type of process related to the message.
    - PrtcolVrsn Protocol Version [1..1]Max6Text
      Version of the acquirer protocol specifications.
    - XchgId Exchange Identification [1..1]Number
      Unique identification of an exchange occurrence.
    - ReTrnsmssnCntr Re Transmission Counter [0..1]Max3NumericText
      Number of retransmissions of the message.
    - CreDtTm Creation Date Time [1..1]ISODateTime
      Date and time at which the message was created.
    - InitgPty Initiating Party [1..1]GenericIdentification176
      Unique identification of the partner that has initiated the exchange.
      - Id Identification [1..1]Max35Text
      - Tp Type [0..1]PartyType33Code
      - Issr Issuer [0..1]PartyType33Code
      - Ctry Country [0..1]Min2Max3AlphaText
      - ShrtNm Short Name [0..1]Max35Text
    - RcptPty Recipient Party [0..1]GenericIdentification177
      Unique identification of the partner that is the recipient of the message exchange.
      - Id Identification [1..1]Max35Text
      - Tp Type [0..1]PartyType33Code
      - Issr Issuer [0..1]PartyType33Code
      - Ctry Country [0..1]Min2Max3AlphaText
      - ShrtNm Short Name [0..1]Max35Text
      - RmotAccs Remote Access [0..1]NetworkParameters7
      - Glctn Geolocation [0..1]Geolocation1
    - Tracblt Traceability [0..*]Traceability8
      Identification of partners involved in exchange from the merchant to the issuer, with the relative timestamp of their exchanges.
      - RlayId Relay Identification [1..1]GenericIdentification177
      - PrtcolNm Protocol Name [0..1]Max35Text
      - PrtcolVrsn Protocol Version [0..1]Max6Text
      - TracDtTmIn Trace Date Time In [1..1]ISODateTime
      - TracDtTmOut Trace Date Time Out [1..1]ISODateTime
  - TxAdvcRspn Transaction Advice Response [1..1]AcceptorCompletionAdviceResponse13
    Information related to the transaction advice response.
    - Envt Environment [1..1]CardPaymentEnvironment81
      Environment of the transaction.
      - Acqrr Acquirer [0..1]Acquirer10
      - SvcPrvdr Service Provider [0..1]Acquirer10
      - Mrchnt Merchant [0..1]Organisation41
      - POI POI [0..1]PointOfInteraction15
      - Card Card [0..1]PaymentCard35
      - Chck Check [0..1]Check1
      - StordValAcct Stored Value Account [0..*]StoredValueAccount2
      - LltyAcct Loyalty Account [0..*]LoyaltyAccount3
      - CstmrDvc Customer Device [0..1]CustomerDevice3
      - Wllt Wallet [0..1]CustomerDevice3
      - PmtTkn Payment Token [0..1]Token1
      - MrchntTkn Merchant Token [0..1]MerchantToken2
      - Crdhldr Cardholder [0..1]Cardholder21
      - PrtctdCrdhldrData Protected Cardholder Data [0..1]ContentInformationType40
      - SaleEnvt Sale Environment [0..1]RetailerSaleEnvironment2
    - Tx Transaction [1..1]CardPaymentTransactionAdviceResponse8
      Card payment transaction between an acceptor and an acquirer.
      - SaleRefId Sale Reference Identification [0..1]Max35Text
      - TxId Transaction Identification [1..1]TransactionIdentifier1
      - InitrTxId Initiator Transaction Identification [0..1]Max35Text
      - RcptTxId Recipient Transaction Identification [0..1]Max140Text
      - RcncltnId Reconciliation Identification [0..1]Max35Text
      - Rspn Response [1..1]Response9Code
    - TMSTrggr TMS Trigger [0..1]TMSTrigger1
      Instructions for contacting the terminal management host.
      - TMSCtctLvl TMS Contact Level [1..1]TMSContactLevel1Code
      - TMSId TMS Identification [0..1]Max35Text
      - TMSCtctDtTm TMS Contact Date Time [0..1]ISODateTime
    - SplmtryData Supplementary Data [0..*]SupplementaryData1
      Additional information incorporated as an extension to the message.
      - PlcAndNm Place And Name [0..1]Max350Text
      - Envlp Envelope [1..1]SupplementaryDataEnvelope1
  - SctyTrlr Security Trailer [0..1]ContentInformationType37
    Trailer of the message containing a MAC.
    - CnttTp Content Type [1..1]ContentType2Code
      Type of data protection.
    - AuthntcdData Authenticated Data [1..1]AuthenticatedData10
      Data protection by a message authentication code (MAC).
      - Vrsn Version [0..1]Number
      - Rcpt Recipient [1..*]Recipient15Choice (choice)
      - MACAlgo MAC Algorithm [1..1]AlgorithmIdentification31
      - NcpsltdCntt Encapsulated Content [1..1]EncapsulatedContent3
      - MAC MAC [1..1]Max140Binary

Have a caaa.021 message? Paste it into the parser to see every element with its name and definition, and format checks on BICs, IBANs, dates and amounts.

caaa.021 questions

What is the latest version of caaa.021?: The latest version in the ISO 20022 e-Repository release of 24 April 2025 is caaa.021.001.06.
What is the root element of caaa.021?: The XML document is Document with the namespace urn:iso:std:iso:20022:tech:xsd:caaa.021.001.06, and its message element is TxAdvcRspn (TransactionAdviceResponse).
Is there an MT equivalent of caaa.021?: No Swift MT message is listed as its direct equivalent on this site. Many ISO 20022 messages have no MT counterpart.

All ISO 20022 messages · ISO 20022 code sets · MT messages

The ISO 20022 message definitions, element names and definitions on this page are reproduced from material published at iso20022.org under the ISO 20022 Intellectual Property Rights policy. This is not the official source: the up-to-date ISO 20022 standards and repository material are published only at iso20022.org. Explanations in our own words are by ZagTrader. ZagTrader is not affiliated with or endorsed by ISO or Swift.