---
title: "Changes to POST /v1/customers/{customer_id}/external-accounts"
method: POST
path: "/v1/customers/{customer_id}/external-accounts"
---

# Changes to POST /v1/customers/{customer_id}/external-accounts

`POST /v1/customers/{customer_id}/external-accounts`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `d213edbaccb6`: 5 breaking, 6 warning, 8 info

## Changes

- **2026-11-03** `d213edbaccb6`: 5 breaking, 6 warning, 8 info
  - the `account_number` request property's minLength was increased from `0` to `1`
  - the response property `institution_clearing_code` became nullable for the status `201`
  - the response property `nickname` became nullable for the status `201`
  - the response property `reference_code` became nullable for the status `201`
  - the response property `institution_id` became optional for the status `201`
  - the `account_number` request property's maxLength was set to `64`
  - the `institution_clearing_code` request property's maxLength was set to `32`
  - the `institution_id` request property's maxLength was set to `64`
  - the `intermediary_bank/oneOf[#/components/schemas/IntermediaryBank]/institution_id` request property's maxLength was set to `64`
  - the `nickname` request property's maxLength was set to `64`
  - added the new `BES` enum value to the `country_code` response property for the response status `201`
  - api tag `crate::connectivity::fiat::controller::openapi::external_accounts` added
  - api tag `External Accounts (Withdraw to Self)` removed
  - added the new optional request property `institution_name`
  - the request property `institution_id` became nullable
  - the request property `institution_id` became optional
  - added the new `BES` enum value to the request property `country_code`
  - added the optional property `failure_reason` to the response with the `201` status
  - added the optional property `recipient/oneOf[#/components/schemas/RecipientResponse]/action_required` to the response with the `201` status

---

[Operation](https://skmtc.dev/1money/apis/1money-openapi/docs/v1/customers/:customer_id/external-accounts/post.md) - [API](https://skmtc.dev/1money/apis/1money-openapi.md) - [Page](https://skmtc.dev/1money/apis/1money-openapi/changes/v1/customers/:customer_id/external-accounts/post)