# Create or replace a language variant (Pidgely extension)

> Manual translation, on every plan. A new language starts as a copy of the base: send only what differs. Fields left out of an existing language are kept.…

Source: https://docs.pidgely.com/api-reference/templates/set-language/

`PUT https://api.pidgely.com/templates/{key}/languages/{locale}`

Manual translation, on every plan. A new language starts as a copy of the base: send only what differs. Fields left out of an existing language are kept. `up_to_date: true` marks it current with the base. Saved in the draft: publish the template to send it.

**Authorization:** `Bearer pdg_…`. An API key with `full_access`. A `sending_access` key gets `401 restricted_api_key`.

## Path parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `key` | string | Yes | Template id or alias |
| `locale` | string | Yes | Language code (`pt-br`, `es`, ...; case and `_` are normalised) |

## Body parameters

JSON object.

| Name | Type | Required | Description |
|---|---|---|---|
| `subject` | string | No | Subject line, up to 998 bytes. Required unless a template provides it. |
| `html` | string | No | Sending html without builder detaches the language into HTML. |
| `text` | string | No | — |
| `builder` | object \| null | No | Builder document; html and text are rendered from it. |
| `up_to_date` | boolean | No | Mark the language as matching the current base (no longer stale). |

## Request

This endpoint is not in the [SDKs](https://docs.pidgely.com/sdks/) yet; call it over HTTP.

```bash tab="cURL"
curl -X PUT 'https://api.pidgely.com/templates/key/languages/locale' \
  -H "Authorization: Bearer $PIDGELY_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "subject": "Hello from Acme",
  "html": "<p>Hello!</p>",
  "text": "Hello!",
  "builder": null,
  "up_to_date": false
}'
```

## Response

`200 OK` with a JSON object.

## Errors

Errors have the shape `{"statusCode", "name", "message"}`. See [Errors](https://docs.pidgely.com/errors/) for the full list.

| Status | Name | When |
|---|---|---|
| 401 | `missing_api_key`, `restricted_api_key` | No `Authorization: Bearer` header, or a `sending_access` key called an endpoint that needs `full_access`. |
| 403 | `invalid_api_key`, `validation_error` | The API key is invalid or revoked, or the request is not allowed for this account (unverified domain, plan limit, paused account). |
| 404 | `not_found` | The resource does not exist in this account (or the id is not a valid UUID). |
| 422 | `validation_error` | A field is missing or invalid; `message` names it. |
| 429 | `rate_limit_exceeded` | Too many requests per second. Wait for `Retry-After` seconds. |