What does STDY mean in ISO 20022?

STDY is Start Of Day in the ExternalSystemEventType1Code code set: Event is the start of the operating day.

Where does STDY appear in a message?

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

ExternalSystemEventType1Code

STDY Code: Start Of Day

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

STDY means start of day in the ISO 20022 system event type code set. Event is the start of the operating day.

Code: STDY
ISO name: StartOfDay
Status: Registered
Last updated: 2018-11-01

Official definition

Event is the start of the operating day.

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

Messages and fields that use ExternalSystemEventType1Code

Message	Element path
admi.005	RptQryCrit/SchCrit/Evt/Cd
camt.004	RptOrErr/AcctRpt/AcctOrErr/Acct/StgOrdr/ExctnTp/Evt/Cd
camt.019	RptOrErr/BizRpt/BizDayOrErr/BizDayInf/SysInfPerCcy/Evt/Tp/Cd
camt.024	NewStgOrdrValSet/ExctnTp/Evt/Cd
camt.070	RptOrErr/Rpt/StgOrdrOrErr/StgOrdr/ExctnTp/Evt/Cd
camt.102	ValSet/ExctnTp/Evt/Cd
semt.044	versions 001.01

STDY in other code sets

STDY in ExternalPurpose1Code

STDY questions

What does STDY mean in ISO 20022?: STDY is Start Of Day in the ExternalSystemEventType1Code code set: Event is the start of the operating day.
Where does STDY appear in a message?: For example in admi.005, element RptQryCrit/SchCrit/Evt/Cd.

All ExternalSystemEventType1Code 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.