---
title: "Link customer bank account to a transaction (authenticated via resolution token)"
method: PUT
path: "/api/v1/transactions/{transactionId}/customer-bank-account"
tags: ["Transaction Updates (Token)"]
---

# Link customer bank account to a transaction (authenticated via resolution token)

`PUT /api/v1/transactions/{transactionId}/customer-bank-account`

Link customer bank account to a transaction (authenticated via resolution token)

## Path parameters

- `transactionId` string, uuid, required — The unique identifier of the transaction

## Request body

- CustomerBankAccountInput — Customer bank account creation/update input
  - `account_holder_name` string, required — Name of the account holder
  - `customer_id` string, uuid — The customer who owns this bank account. Required when minting accounts outside the Flinks-linking flow.
  - `account_type` union — US ACH account type
    - 'checking'
    - 'savings'
  - `currency` string, required — The currency of the bank account
  - `country` string, required — The country of the bank account
  - `iban` string — The IBAN of the bank account
  - `account_number` string — The account number of the bank account
  - `sort_code` string — The sort code of the bank account (UK)
  - `routing_number` string — The routing number of the bank account (US)
  - `bban` string — Basic Bank Account Number (e.g., Norway)
  - `plusgiro_number` string — PlusGiro number (Sweden)
  - `bsb` string — Bank State Branch code (Australia)
  - `bic` string — The BIC/SWIFT code of the bank account

## Response `200`

Success

- ResolutionLinkTokenUpdateSuccess
  - `success` boolean, required — Indicates if the request was successful
  - `data` object, required
    - `success` boolean, required

## Other responses

- `400` — Bad Request
- `403` — Forbidden

---

[API](https://skmtc.net/banqzinc/apis/quidkey-api.md) · [All operations](https://skmtc.net/banqzinc/apis/quidkey-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/banqzinc/quidkey-api/revisions/f86d2bdbcb08/schema)