---
title: AppStoreVersionExperimentTreatmentLocalization.Relationships.AppPreviewSets.Data
framework: appstoreconnectapi
role: symbol
role_heading: Object
path: appstoreconnectapi/appstoreversionexperimenttreatmentlocalization/relationships-data.dictionary/apppreviewsets-data.dictionary/data-data.dictionary
---

# AppStoreVersionExperimentTreatmentLocalization.Relationships.AppPreviewSets.Data

The request body you use to update an app store version experiment treatment localization.

## Declaration

```data
object AppStoreVersionExperimentTreatmentLocalization.Relationships.AppPreviewSets.Data
```

## Properties

id: type: