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ExternalAuthenticationMethod1Code

ATCC Code: ATC

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ATCC means atc in the ISO 20022 authentication method code set. Application Transaction Counter.

Code
ATCC
ISO name
ATC
Status
Registered
Last updated
2024-12-03

Official definition

Application Transaction Counter.

Definition from the ISO 20022 External Code Sets, 2Q2026 (published 28 Aug 2026).

Messages and fields that use ExternalAuthenticationMethod1Code

MessageElement path
caad.008Vrfctn/Tp, Crdhldr/Id/Tp, Pyer/Crdntls/Tp, Pyee/Crdntls/Tp
caad.009Vrfctn/Tp, Crdhldr/Id/Tp, Pyer/Crdntls/Tp, Pyee/Crdntls/Tp
cafm.001Crdhldr/Id/Tp, Pyer/Crdntls/Tp, Pyee/Crdntls/Tp
cafm.002Crdhldr/Id/Tp, Pyer/Crdntls/Tp, Pyee/Crdntls/Tp
cafr.001Crdhldr/Id/Tp
cafr.002Crdhldr/Id/Tp
cafr.003Crdhldr/Id/Tp
cafr.004Crdhldr/Id/Tp

And 19 more messages: see the ExternalAuthenticationMethod1Code page.

ATCC questions

What does ATCC mean in ISO 20022?
ATCC is ATC in the ExternalAuthenticationMethod1Code code set: Application Transaction Counter.
Where does ATCC appear in a message?
For example in caad.008, element Vrfctn/Tp.

All ExternalAuthenticationMethod1Code codes · ISO 20022 code sets

The ISO 20022 code 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.