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ISO 20022 · Authentication method
ARQC ARQC
Registered in sourceSource release: August 2026 (v3)Source details
Code setExternalAuthenticationMethod1Code
Published definition
Verification of a cryptogram generated by a chip card, for instance an ARQC (Authorisation Request Cryptogram).
Code set and usage
Authentication method contains 68 registered codes. Its exact identifier is ExternalAuthenticationMethod1Code.
Specifies the authentication method used, as published separately in an external authentication method code set. External code sets can be downloaded from www.iso20022.org.
Use the code with the applicable message version and implementation guide. A matching code value alone does not establish the same meaning in another set.