What does BOOK mean in ISO 20022?

BOOK is Book in the ExternalSystemBalanceType1Code code set: Balance that is registered in the books of the account servicer.

Where does BOOK appear in a message?

For example in admi.005, element RptQryCrit/SchCrit/Bal/Tp/Cd.

ExternalSystemBalanceType1Code

BOOK Code: Book

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

BOOK means book in the ISO 20022 system balance type code set. Balance that is registered in the books of the account servicer.

Code: BOOK
ISO name: Book
Status: Registered
Last updated: 2018-11-01

Official definition

Balance that is registered in the books of the account servicer.

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

Messages and fields that use ExternalSystemBalanceType1Code

Message	Element path
admi.005	RptQryCrit/SchCrit/Bal/Tp/Cd
camt.003	AcctQryDef/AcctCrit/NewCrit/SchCrit/Bal/Tp/Cd
camt.004	RptOrErr/AcctRpt/AcctOrErr/Acct/MulBal/Tp/Cd

BOOK in other code sets

BOOK in ExternalEntryStatus1Code

BOOK questions

What does BOOK mean in ISO 20022?: BOOK is Book in the ExternalSystemBalanceType1Code code set: Balance that is registered in the books of the account servicer.
Where does BOOK appear in a message?: For example in admi.005, element RptQryCrit/SchCrit/Bal/Tp/Cd.

All ExternalSystemBalanceType1Code 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.