ISO 20022 · Proxy account type

CUSTCustomer Identification Number

Registered in sourceSource release: August 2026 (v3)

Published definition

Any other customer identification number issued by a corporate, bank or other organization, used as account proxy. (applied for corporate or individual account proxy).

Code set and usage

Proxy account type contains 22 registered codes. Its exact identifier is ExternalProxyAccountType1Code.

Specifies the external proxy account type code, as published in the proxy account type external 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.

View 384 published message references

This code in other sets 16

These share the characters CUST. Their meanings belong to their respective sets.