List Creditor Schemes RESTful API

API Details

A payment scheme is a set of rules that govern how transactions are processed. SEPA and Bacs are two such schemes, which govern both Direct Debit and Credit Transfer transactions in the EU and in the UK.

  • All mandates/DDIs that you create (and all subsequent Direct Debit payments) must be linked to a unique Creditor Scheme Identifier (CSID) for SEPA payments or to a Service User Number (SUN) for Bacs payments.
  • If you already have a CSID/SUN you will need to use List Creditor Schemes to retrieve its Nuapay resource identifier.

If you lose this reference or if you have multiple CSIDs or SUNs and want to review them all, you can use the List Creditor Schemes service. You will use this resource identifier CSID/SUN in all subsequent Mandate and Direct Debit requests.