What does AB26 mean in ISO 20022?

AB26 is Invalid Batch Settlement Instruction in the ExternalRejectedReason1Code code set: Invalid batch Settlement Instruction received.

ExternalRejectedReason1Code

AB26 Reason Code: Invalid Batch Settlement Instruction

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

AB26 means invalid batch settlement instruction in the ISO 20022 rejected reason code set. Invalid batch Settlement Instruction received.

Code: AB26
ISO name: InvalidBatchSettlementInstruction
Status: Registered
Last updated: 2021-08-31

Official definition

Invalid batch Settlement Instruction received.

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

Messages and fields that use ExternalRejectedReason1Code

Message	Element path
reda.058	versions 001.01

AB26 in other code sets

AB26 in ExternalStatusReason1Code

AB26 questions

What does AB26 mean in ISO 20022?: AB26 is Invalid Batch Settlement Instruction in the ExternalRejectedReason1Code code set: Invalid batch Settlement Instruction received.

All ExternalRejectedReason1Code codes · ISO 20022 code sets

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