What does NSTP mean in ISO 20022?

NSTP is Not Straight Through Processing in the ExternalAcceptedReason1Code code set: Instruction was not straight through processing and had to be processed manually

ExternalAcceptedReason1Code

NSTP Reason Code: Not Straight Through Processing

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

NSTP means not straight through processing in the ISO 20022 accepted reason code set. Instruction was not straight through processing and had to be processed manually

Code: NSTP
ISO name: NotStraightThroughProcessing
Status: Registered
Last updated: 2016-05-11

Official definition

Instruction was not straight through processing and had to be processed manually

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

Messages and fields that use ExternalAcceptedReason1Code

Message	Element path
reda.058	versions 001.01

NSTP in other code sets

NSTP questions

What does NSTP mean in ISO 20022?: NSTP is Not Straight Through Processing in the ExternalAcceptedReason1Code code set: Instruction was not straight through processing and had to be processed manually

All ExternalAcceptedReason1Code codes · ISO 20022 code sets

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