Where does ARNU appear in a message?

For example in camt.110, element InvstgtnData/RsnSubTp/Cd.

ARNU Reason Code: Request Alien Registration Number

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

ARNU means request alien registration number in the ISO 20022 investigation reason sub type code set. Alien Registration Number is requested.

Code: ARNU
ISO name: RequestAlienRegistrationNumber
Status: Registered
Last updated: 2024-02-28

Official definition

Alien Registration Number is requested.

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

Messages and fields that use ExternalInvestigationReasonSubType1Code

Message	Element path
camt.110	InvstgtnData/RsnSubTp/Cd
camt.111	InvstgtnRspn/InvstgtnData/OrgnlInvstgtnRsnSubTp/Cd

ARNU in other code sets

ARNU in ExternalPersonIdentification1Code

ARNU questions

What does ARNU mean in ISO 20022?: ARNU is Request Alien Registration Number in the ExternalInvestigationReasonSubType1Code code set: Alien Registration Number is requested.
Where does ARNU appear in a message?: For example in camt.110, element InvstgtnData/RsnSubTp/Cd.

All ExternalInvestigationReasonSubType1Code 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.