Registered in sourceSource release: August 2026 (v3)
Published definition
Document is a supporting document.
Additional source information
CR1071
Code set and usage
Letter type contains 3 registered codes. Its exact identifier is ExternalLetterType1Code.
Specifies the letter type as published in an external letter type code list. 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.