ISO 20022 · External code set

Payment modification rejection codes

Specifies the reason for the rejection of a modification, as published in an external payment modification rejection code set. External code sets can be downloaded from www.iso20022.org.

28 registered codesSource release: August 2026 (v3)Source details

Code setExternalPaymentModificationRejection1Code

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All 28 codes

Registered codes in `ExternalPaymentModificationRejection1Code`. Select a code for its full definition and source details.
Code	Published name and definition
`UM01`	Unable To Modify Related Reference Related transaction reference cannot be modified.
`UM02`	Unable To Modify Payment Service Level Service level element of payment type cannot be modified(former UnableToModifyBankOperationCode).
`UM03`	Unable To Modify Category Purpose Category purpose element of payment type cannot be modified (former UnableToModifyInstructionCode).
`UM04`	Unable To Modify Requested Execution Date RequestedExecutionDate cannot be modified.
`UM05`	Unable To Modify Interbank Settlement Date InterbankSettlementDate cannot be modified (former UnableToModifyValueDate).
`UM06`	Unable To Modify Interbank Settlement Account SettlementAccount cannot be modified (former UnableToModifyInterbankSettlementAccount).
`UM07`	Unable To Modify Debtor Debtor cannot be modified.
`UM08`	Unable To Modify Debtor Account DebtorAccount cannot be modified.
`UM09`	Unable To Modify Instructed Reimbursement Agent InstructedReimbursementAgent cannot be modified (former UnableToModifyReceiverCorrespondent).
`UM10`	Unable To Modify Third Reimbursement Agent ThirdReimbursementAgent cannot be modified (former UnableToModifyThirdReimbursementInstitution).
`UM11`	Unable To Modify Payment Clearing Channel Clearing Channel element of payment type cannot be modified (former UnableToModifyPaymentScheme)
`UM12`	Unable To Modify Creditor Agent Account Creditor agent account cannot be modified (former UnableToModifyAccountOfBeneficiaryInstitution)
`UM13`	Unable To Modify Creditor Creditor cannot be modified.
`UM14`	Unable To Modify Creditor Account Creditor account cannot be modified.
`UM15`	Unable To Modify Remittance Information Remittance information cannot be modified.
`UM16`	Unable To Modify Payment Purpose PaymentPurpose cannot be modified.
`UM17`	Unable To Modify Charge Bearer Charge bearer cannot be modified (former UnableToModifyDetailsOfCharges).
`UM18`	Unable To Modify Instruction For Next Agent Instruction for next agent cannot be modified (former UnableToModifySenderToReceiver).
`UM19`	Unable To Modify Instruction For Creditor Agent Instruction for creditor agent cannot be modified. (former UnableToModifyInstructionForFinalAgent).
`UM20`	Instruction Cancelled Submit New Instruction Used to inform of cancellation and request a new payment instruction. This should only be used if an agent does not want to modify a pending payment.
`UM21`	Unable To Modify Submit Cancellation Modification is not possible and the cancellation is requested.
`UM22`	Unable To Modify Debtor Agent Account Debtor agent account cannot be modified (applicable for direct debits).
`UM23`	Unable To Modify Interbank Settlement Amount Interbank settlement amount cannot be modified.
`UM24`	Unable To Modify Instruction For Debtor Agent Instruction for debtor agent cannot be modified (applicable for direct debits)
`UM25`	Unable To Modify Requested Collection Date Requested collection date cannot be modified (applicable for direct debits)
`UM26`	Unable To Modify Payment Type Payment type cannot be modified.
`UM27`	Unable To Modify Instructed Amount Instructed or equivalent amount cannot be modified.
`UM28`	Unable To Modify Priority Priority of payment message cannot be modified.

Message references 7

Versions listed in the source workbook, including older versions. This list does not establish which messages a bank, network or provider supports.

camt.029.001.08Resolution Of Investigation V08
camt.029.001.11Resolution Of Investigation V11
camt.029.001.09Resolution Of Investigation V09
camt.029.001.10Resolution Of Investigation V10
camt.029.001.14Resolution Of Investigation V14
camt.029.001.12Resolution Of Investigation V12
camt.029.001.13Resolution Of Investigation V13

Source: UsageInMsgs sheet in 2Q2026_externalcodesets_v3.xlsx.