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camt.028ISO 20022

camt.028 — Additional Payment Information

Supplies additional or corrected payment or statement-entry information so an account owner can reconcile an item. It carries information, not payment value.

DIRECTION: Sent by an account servicing institution to an account owner in the context of an investigation or reconciliation repair.

Version + profile: camt.028 is a message-family identifier, not a complete version. The numeric .001.xx definition and field rules depend on the scheme, service, usage guideline, and implementation version named in each context; sample namespaces show only the illustrated version.

Contributor Shubham Mathure

DOMAIN + EDITORIAL AUDITAudited 2026-07-18 for payment logic, source scope, technical writing, and Payments Signal voice — see the method.

EVIDENCE AT ARM'S REACH

IMPLEMENTATION RESOURCES

Start with the exact message version, then apply the scheme or network profile that governs your implementation.

An XSD checks XML structure. A usage guideline adds profile rules, conditional fields, code restrictions, and business controls. XSD-valid does not mean scheme-compliant.

Field matrixBase ISO 20022current

camt.028 field matrix

Curated field requirements, contexts, operational meaning, and implementation cautions.

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Payments Signal
Checked
2026-07-19
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WHO IS INVOLVED

  • Account servicer / assignerProvides corrected or additional data and links it to the original payment, entry and case.
  • Account owner / assigneeUses the information to reconcile or apply the item and records whether the case can close.

KEY FIELDS

Curated conceptual subset. camt.028 belongs to the classic ISO investigations set and is not the same as a camt.111 Case Management response; service reachability and version decide the production dialogue.

Key fields of camt.028
FIELDNAMEPRESENCEWHAT IT MEANS
Assgnmt/IdAssignment identificationMANDATORYReference for the information assignment.
Assgnmt/AssgnrAssignerMANDATORYAccount servicer supplying the information.
Assgnmt/AssgneAssigneeMANDATORYAccount owner receiving the information.
Case/IdCase identificationCONDITIONALReference linking the information to an open investigation.
UndrlygUnderlying payment or entryMANDATORYIdentifies the transaction or statement entry being clarified.
InfAdditional payment informationMANDATORYCorrected or supplementary data supplied for reconciliation.
SplmtryDataSupplementary dataOPTIONALApproved additional structured data that cannot be carried elsewhere.

COMMON ERRORS

  • Treating additional information as authority to change booked value.Consequence: A narrative correction causes an unauthorised ledger adjustment.Avoid it: Use the information to reconcile; process any value correction through the authorised payment or accounting workflow.
  • Sending corrected data without the case and original-entry references.Consequence: The receiver cannot match the repair to the held item.Avoid it: Carry every stable original identifier and the current case reference.

USAGE CONTEXTS

  • Payment repairSupplies corrected party, reference or transaction data needed to apply a held item.
  • Statement reconciliationClarifies an account entry without creating a new debit or credit.

SEE IT IN A PLAYABLE FLOW

LEARN THE CONTEXT

Sources for this reference2
  1. Official requirement

    ISO 20022 Catalogue of messages ↗ — ISO 20022 Registration Authority · camt.028 AdditionalPaymentInformation message definition

    Defines the current versions of all ISO 20022 message definitions, including the pain, pacs, and camt messages taught on this site. · Checked 2026-07-12

    Each message set is described by a Message Definition Report; earlier versions remain available in the ISO 20022 messages archive.

  2. Simplified educational illustration

    Payments Signal editorial teaching models — Payments Signal

    This site's own simplified teaching models. · Checked 2026-07-12

    What this simplifies: A conceptual field subset for payment and statement reconciliation; version-specific conditions are omitted.

    Used wherever diagrams, scenarios, figures, or example values are didactic constructions rather than sourced facts; every such use carries a simplifications disclosure. All people, companies, banks, and list entries in examples are fictional.

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