**Version: 202607**

# Update market default language

**PUT** `/openapi/2026-07/markets/:id/default-language`

Set the default language of a market. The language must already be published to the market and enabled.

## Request

**Path Parameters**

- `id` string (required)

  Market ID

**application/json**

**Body | Example**

**Body (required)**

- `language_code` string (required)

  IETF language code (e.g., zh-CN). The language must already be published to this market and enabled. For the primary market, changing the default language also changes the store default language

```json
{
  "language_code": "string"
}
```

## Responses

**200**

OK

**application/json**

**Schema | Example**

**Schema**

- `code` string

  error code
- `message` string

  error message
- `data` object

  - `` object

```json
{
  "code": "string",
  "message": "string",
  "data": {}
}
```