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Case studies

SEPA Instant on ISO 20022, signed and schema-valid.

An EU-licensed payments institution set out to send and receive SEPA Instant itself, on the full ISO 20022 message set.

Client withheld under NDA

Challenge

The scheme gives a payment 10 seconds to reach a final answer, so a message that fails validation has already missed it. Nothing gets repaired by hand.

What we built

  • The pacs lifecycle: pacs.008 credit transfers, pacs.002 status reports, pacs.004 returns.
  • Recall and recall-response handling on camt.056 and camt.029.
  • XSD validation against the pacs and camt schemas before a message leaves the system.
  • xmldsig signing and signature verification on every exchange with the scheme.
  • A high-availability deployment, so the loss of a node does not stop the payment flow.

Business outcome

The institution now offers SEPA Instant as its own service, processing payments directly and settling them through central-bank infrastructure without relying on a third-party processor. Payments complete within the scheme's 10-second window, and the service remains available if a node fails. Every change in payment status is recorded, reducing the time required for compliance and scheme reviews.

Capabilities

  • ISO 20022
  • SEPA Instant
  • Message validation
  • xmldsig
  • High availability

Describe your challenge.

Early idea or system already in production. Both are worth a conversation.

  • Built and run by our senior team.
  • Confidential from the first call, NDA as standard.

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