ISO 20022 · External code set
Mandate reason codes
Specifies the external mandate processing reason code in the format of character string with a maximum length of 4 characters. The list of valid codes is an external code list published separately. External code sets can be downloaded from www.iso20022.org.
Code setExternalMandateReason1Code
All 48 codes
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| Code | Published name and definition |
|---|---|
AC01 | Incorrect Account NumberDefinitionFormat of the account number specified is not correct |
AC04 | Closed Account NumberDefinitionAccount number specified has been closed on the Receiver's books |
AC06 | Blocked AccountDefinitionAccount specified is blocked, prohibiting posting of transactions against it. |
AG01 | Transaction ForbiddenDefinitionTransaction forbidden on this type of account (formerly NoAgreement) |
AG02 | Invalid Bank Operation CodeDefinitionBank Operation code specified in the message is not valid for receiver |
AM02 | Not Allowed AmountDefinitionSpecific transaction/message amount is greater than allowed maximum |
AM03 | Not Allowed CurrencyDefinitionSpecified message amount is a non processable currency outside of existing agreement |
AM05 | DuplicationDefinitionDuplication. |
BE01 | Inconsistent With End CustomerDefinitionIdentification of end customer is not consistent with associated account number. (formerly CreditorConsistency). |
BE04 | Missing Creditor AddressDefinitionSpecification of creditor's address, which is required for payment, is missing/not correct (formerly IncorrectCreditorAddress). |
BE05 | Unrecognised Initiating PartyDefinitionParty who initiated the message is not recognised by the end customer |
BE06 | Unknown End CustomerDefinitionEnd customer specified is not known at associated Sort/National Bank Code or does no longer exist in the books |
BE07 | Missing Debtor AddressDefinitionSpecification of debtor's address, which is required for payment, is missing/not correct. |
DT01 | Invalid DateDefinitionInvalid date (eg, wrong settlement date) |
FF01 | Invalid File FormatDefinitionFile format incomplete or invalid |
MD01 | No MandateDefinitionNo Mandate |
MD02 | Missing Mandatory Information In MandateDefinitionMandate related information data required by the scheme is missing. |
MD07 | End Customer DeceasedDefinitionEnd customer is deceased. |
MD08 | No Mandate Service By AgentDefinitionReceiving agent does not offer specified Mandate services |
MD09 | No Mandate Service On CustomerDefinitionAccount is not open to specified Mandates services |
MD10 | No Mandate Service For SpecifiedDefinitionAccount is not open to specified Mandates services for this particular creditor |
MD11 | Unrecognised AgentDefinitionAgent to whom the message needs to be forwarded cannot be located |
MD12 | Not Unique Mandate ReferenceDefinitionMandate identification is not unique to the creditor |
MD13 | Incorrect Customer AuthenticationDefinitionThere is a problem with the customer authentication |
MD14 | Incorrect AgentDefinitionAgent in the payment workflow is incorrect |
MD15 | Incorrect CurrencyDefinitionCurrency of the transaction is incorrect |
MD16 | Requested By CustomerDefinitionCancellation/amendment requested by the debtor |
MD17 | Requested By Initiating PartyDefinitionCancellation/amendment requested by the creditor |
MD18 | Requested By Initiating Party And CustomerDefinitionCancellation/amendment requested by the creditor and the debtor |
MD19 | Mandate Cancelled Due To Early SettlementDefinitionMandate cancellation following early reimbursement of the debit by the debtor |
MD20 | Mandate ExpiredDefinitionMandate cancellation following validity expiration |
MD21 | Mandate Cancelled Due To FraudDefinitionMandate cancellation due to suspected fraud |
MD22 | Mandate Initiation CancelledDefinitionMandate cancellation following mandate initiation cancellation |
MD23 | Mandate Amendment CancelledDefinitionMandate cancellation following mandate amendment cancellation |
MS02 | Not Specified Reason Customer GeneratedDefinitionReason has not been specified by end customer |
MS03 | Not Specified Reason Agent GeneratedDefinitionReason has not been specified by agent. |
NARR | NarrativeDefinitionReason is provided as narrative information in the additional reason information. |
RC01 | Bank Identifier IncorrectDefinitionBank Identifier code specified in the message has an incorrect format (formerly IncorrectFormatForRoutingCode). |
RF01 | Not Unique Transaction ReferenceDefinitionTransaction reference is not unique within the message. |
RR01 | Missing Debtor Account Or IdentificationDefinitionSpecification of the debtor’s account or unique identification needed for reasons of regulatory requirements is insufficient or missing |
RR02 | Missing Debtor Name Or AddressDefinitionSpecification of the debtor’s name and/or address needed for regulatory requirements is insufficient or missing. |
RR03 | Missing Creditor Name Or AddressDefinitionSpecification of the creditor’s name and/or address needed for regulatory requirements is insufficient or missing. |
RR04 | Regulatory ReasonDefinitionRegulatory Reason |
SL01 | Specific Service Offered By Debtor AgentDefinitionDue to specific service offered by the Debtor Agent |
SL11 | Creditor Not On Whitelist Of DebtorDefinitionWhitelisting service offered by the Debtor Agent; Debtor has not included the Creditor on its “Whitelist” (yet). In the Whitelist the Debtor may list all allowed Creditors to debit Debtor bank account. |
SL12 | Creditor On Blacklist Of DebtorDefinitionBlacklisting service offered by the Debtor Agent; Debtor included the Creditor on his “Blacklist”. In the Blacklist the Debtor may list all Creditors not allowed to debit Debtor bank account. |
SL13 | Maximum Number Of Direct Debit Transactions ExceededDefinitionDue to Maximum allowed Direct Debit Transactions per period service offered by the Debtor Agent. |
SL14 | Maximum Direct Debit Transaction Amount ExceededDefinitionDue to Maximum allowed Direct Debit Transaction amount service offered by the Debtor Agent. |
Message references 24
Versions listed in the source workbook, including older versions. This list does not establish which messages a bank, network or provider supports.
Source: UsageInMsgs sheet in 2Q2026_externalcodesets_v3.xlsx.