POST Localization on id

When i make a post on my api i have that response:

POST http://0.0.0.0:1337/api/job-roles/1/localizations
“data”: {
“name”: “Conseil”
}

{
“data”: null,
“error”: {
“status”: 400,
“name”: “ApplicationError”,
“message”: “locale is missing”,
“details”: {}
}
}

if someone can help me please
(i take the post method il my swagger documentation api plugin)