---
title: messageIdentifier
framework: storekit
role: symbol
role_heading: Type Property
path: storekit/skcloudservicesetupoptionskey/messageidentifier
---

# messageIdentifier

A key that is used to select the main message presented to the user for this setup view.

## Declaration

```swift
static let messageIdentifier: SKCloudServiceSetupOptionsKey
```

## Mentioned in

Offering Apple Music Subscription in Your App

## Discussion

Discussion If this key is missing, the setup view is configured as if it is using the join key by default.

## See Also

### Indicating Setup Options

- [action](storekit/skcloudservicesetupoptionskey/action.md)
- [SKCloudServiceSetupAction](storekit/skcloudservicesetupaction.md)
- [iTunesItemIdentifier](storekit/skcloudservicesetupoptionskey/itunesitemidentifier.md)
- [affiliateToken](storekit/skcloudservicesetupoptionskey/affiliatetoken.md)
- [campaignToken](storekit/skcloudservicesetupoptionskey/campaigntoken.md)
- [SKCloudServiceSetupMessageIdentifier](storekit/skcloudservicesetupmessageidentifier.md)