Rename a subaccount

Renames an existing subaccount by updating its display name. ## Path Parameters | Field | Type | Required | Description | |-------|------|----------|-------------| | `subaccount_id` | UUID | Yes | ID of the subaccount to rename | ## Request Body | Field | Type | Required | Description | Validation Rules | |-------|------|----------|-------------|-----------------| | `name` | String | Yes | New display name of the subaccount | Must be between 1 and 100 characters | ## Response Body | Field | Type | Description | |-------|------|-------------| | `id` | UUID | Unique identifier of the subaccount | | `name` | String | Updated subaccount name | | `account_number` | String | Account number for deposits | | `routing_number` | String | Deprecated: use `routing_numbers.ach`. Kept for backward compatibility | | `routing_numbers` | Object | Routing numbers per rail | | `routing_numbers.ach` | String | ACH routing number for ACH transfers | | `routing_numbers.wire` | String | Wire routing number for wire transfers | | `total_incoming_in_minor_units` | Integer | Total incoming funds in the smallest unit of the account's currency | | `total_outgoing_in_minor_units` | Integer | Total outgoing funds in the smallest unit of the account's currency | | `created_at` | DateTime | ISO 8601 timestamp when the subaccount was created | | `updated_at` | DateTime | ISO 8601 timestamp when the subaccount was last updated | ## Notes - Subaccount `name` values are allowed to duplicate within the same entity. - If `name` is unchanged, the endpoint is idempotent and returns `200` with the current subaccount state.