GLOBAL PAYMENTS KNOWLEDGEISO 20022 / SWIFT / SEPA / MT / MX
PAYMENTSSIGNAL

The interactive academy for the standards, messages, and rails that move money.

GET IN TOUCH
ZENGIN SYSTEM (JAPAN)

Returned through Zengin: a retail transfer the receiver cannot apply

Trigger: The beneficiary account is invalid or closed, so Nordbank cannot credit it and returns the transfer through the Zengin System.

Contributor Shubham Mathure

What operations sees first: A retail credit transfer comes back through the clearing network rather than reaching the beneficiary.

WHERE IS THE MONEY?

Returned to Riya after the return worked back through the network — Arjun was never credited.

DID SETTLEMENT HAPPEN?

Any net settlement of the original is reversed by the returned item through the Zengin network.

WHO ACTS NEXT?

Nordbank (receiving bank) Riya confirms Arjun's account details and retries.

PLAY THE EXCEPTION

Trigger: Nordbank finds the beneficiary account invalid or closed and cannot credit Arjun, so the transfer must go back.

STEP 1 / 6MESSAGE

Riya instructs the transfer

Riya (payer) → Bank Alfa (sending bank)

Riya asks Bank Alfa to pay Arjun by a domestic credit transfer. The instruction is a request to move money; on its own it carries no funds.

Step 1 of 6: Riya instructs the transfer

  1. 01Message
    Riya instructs the transferRiya (payer) → Bank Alfa (sending bank)
  2. 02Posting
    Bank Alfa debits Riya's accountBank Alfa (sending bank)
  3. 03Message
    Bank Alfa sends the transfer through the Zengin SystemBank Alfa (sending bank) → Zengin System (Zengin-Net)
  4. 04 · EXCEPTION PATHProcessing
    Nordbank cannot credit ArjunNordbank (receiving bank)
  5. 05 · EXCEPTION PATHMessage
    Nordbank returns the transfer through the Zengin SystemNordbank (receiving bank) → Zengin System (Zengin-Net)
  6. 06 · EXCEPTION PATHPosting
    Bank Alfa refunds RiyaBank Alfa (sending bank)
  7. OUTCOME
    Funds
    Returned to Riya's account; Arjun was never credited.
    Settlement
    The failed transfer's obligation is unwound and the return nets and settles through the same Zengin cycle at the Bank of Japan.
    Who acts next
    Nordbank (receiving bank) — Riya confirms Arjun's correct account details and sends the transfer again.
Full step-by-step text (works without JavaScript)
  1. 01Message
    Riya instructs the transferRiya (payer) → Bank Alfa (sending bank)

    Riya asks Bank Alfa to pay Arjun by a domestic credit transfer. The instruction is a request to move money; on its own it carries no funds.

  2. 02Posting
    Bank Alfa debits Riya's accountBank Alfa (sending bank)

    Once Bank Alfa accepts the instruction it books the debit. Riya's money has left her account, but no money has yet moved between the banks.

    • DR Riya's current account at Bank Alfa — JPY 50,000
  3. 03Message
    Bank Alfa sends the transfer through the Zengin SystemBank Alfa (sending bank) → Zengin System (Zengin-Net)

    Bank Alfa submits the transfer to the Zengin System, the interbank clearing network run by Zengin-Net, which routes the details on to the receiving bank.

  4. 04 · EXCEPTION PATHProcessing
    Nordbank cannot credit ArjunNordbank (receiving bank)

    The beneficiary account is invalid or closed, so Nordbank cannot make the funds available and must send the transfer back rather than complete it.

  5. 05 · EXCEPTION PATHMessage
    Nordbank returns the transfer through the Zengin SystemNordbank (receiving bank) → Zengin System (Zengin-Net)

    The return travels back through the same Zengin clearing network, referencing the original transfer so Bank Alfa can match it and refund Riya.

  6. 06 · EXCEPTION PATHPosting
    Bank Alfa refunds RiyaBank Alfa (sending bank)

    Bank Alfa re-credits Riya for the returned transfer, with the reason available so she can correct the account details before trying again.

    • CR Riya's current account at Bank Alfa — JPY 50,000
  7. OUTCOME
    Funds
    Returned to Riya's account; Arjun was never credited.
    Settlement
    The failed transfer's obligation is unwound and the return nets and settles through the same Zengin cycle at the Bank of Japan.
    Who acts next
    Nordbank (receiving bank) — Riya confirms Arjun's correct account details and sends the transfer again.

THE TIMELINE

  1. 01Riya
    Sends a JPY 50,000 domestic credit transfer to Arjun through the Zengin System.
  2. 02Zengin System (Zengin-Net)
    Routes the transfer to Nordbank and includes it in the net position calculation.
  3. 03Nordbank (receiving bank)
    Cannot credit the beneficiary account (invalid or closed) and returns the transfer through the Zengin System.

    Returns travel back through the clearing network, not instantly.

  4. 04Bank Alfa (sending bank)
    Refunds Riya once the return works back through the network, with the reason available.

Resolution: The Zengin System nets and settles at the Bank of Japan, so a failed retail transfer returns through the same clearing network. Riya is refunded.

LEARN THE CONCEPTS

Sources for this scenario2
  1. Official requirement

    Zengin System ↗ — Japanese Banks Payment Clearing Network (Zengin-Net) · Zengin returns

    Describes the Zengin System, Japans interbank clearing system for domestic retail credit transfers (launched 1973), operated by the Japanese Banks Payment Clearing Network (Zengin-Net): payments below JPY 100 million settle on a deferred net settlement basis across accounts at the Bank of Japan, while payments of JPY 100 million or more settle RTGS in BOJ-NET (since the Next-Generation RTGS project of November 2011). · Checked 2026-07-14

    Zengin clears retail credit transfers and nets positions settled at the Bank of Japan; large-value items are diverted to RTGS in BOJ-NET.

  2. Simplified educational illustration

    Payments Signal editorial teaching models — Payments Signal

    This site's own simplified teaching models. · Checked 2026-07-12

    What this simplifies: Single-cycle teaching model; participant-specific handling and exact timings vary.

    Used wherever diagrams, scenarios, figures, or example values are didactic constructions rather than sourced facts; every such use carries a simplifications disclosure. All people, companies, banks, and list entries in examples are fictional.