ISO 20022 · Mandate reason

SL12Creditor On Blacklist Of Debtor

Registered in sourceSource release: August 2026 (v3)

Published definition

Blacklisting 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.

Code set and usage

Mandate reason contains 48 registered codes. Its exact identifier is ExternalMandateReason1Code.

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.

Use the code with the applicable message version and implementation guide. A matching code value alone does not establish the same meaning in another set.

View 24 published message references

This code in other sets 2

These share the characters SL12. Their meanings belong to their respective sets.