---
title: Create an app store version experiment treatment localization
framework: appstoreconnectapi
role: symbol
role_heading: Web Service Endpoint
path: appstoreconnectapi/post-v1-appstoreversionexperimenttreatmentlocalizations
---

# Create an app store version experiment treatment localization

Add a new localization for an App Store version experiment treatment.

## URL

POST https://api.appstoreconnect.apple.com/v1/appStoreVersionExperimentTreatmentLocalizations

## Response Codes

201 Created: 400 Bad Request: 401 Unauthorized: 403 Forbidden: 409 Conflict: 422 : 429 :

## See Also

### Endpoints

- [Read app store version experiment treatment localization information](appstoreconnectapi/get-v1-appstoreversionexperimenttreatmentlocalizations-_id_.md)
- [List all screenshot sets for an experiment treatment localization](appstoreconnectapi/get-v1-appstoreversionexperimenttreatmentlocalizations-_id_-appscreenshotsets.md)
- [List all preview sets for an experiment treatment localization](appstoreconnectapi/get-v1-appstoreversionexperimenttreatmentlocalizations-_id_-apppreviewsets.md)
- [List preview set IDs for an App Store version experiment treatment localization](appstoreconnectapi/get-v1-appstoreversionexperimenttreatmentlocalizations-_id_-relationships-apppreviewsets.md)
- [List screenshot set IDs for an App Store version experiment treatment localization](appstoreconnectapi/get-v1-appstoreversionexperimenttreatmentlocalizations-_id_-relationships-appscreenshotsets.md)
- [Delete a treatment localization for an app store version experiment](appstoreconnectapi/delete-v1-appstoreversionexperimenttreatmentlocalizations-_id_.md)