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ExternalLetterType1Code

LTBK Code: Letter To Bank

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LTBK means letter to bank in the ISO 20022 letter type code set. Document is a letter to the bank.

Code
LTBK
ISO name
LetterToBank
Status
Registered
Last updated
2021-11-30

Official definition

Document is a letter to the bank.

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

Messages and fields that use ExternalLetterType1Code

MessageElement path
auth.026ReqOrLttr/Tp/Cd

LTBK questions

What does LTBK mean in ISO 20022?
LTBK is Letter To Bank in the ExternalLetterType1Code code set: Document is a letter to the bank.
Where does LTBK appear in a message?
For example in auth.026, element ReqOrLttr/Tp/Cd.

All ExternalLetterType1Code 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.