com.apple.developer.storekit.external-purchase-link-streaming
An entitlement that grants a qualifying music-streaming app the ability to communicate and promote offers.
Discussion
This entitlement enables qualifying music-streaming apps to communicate and promote offers.
If your account receives this entitlement, you can add it to your app by opening the project’s .entitlements file in Xcode. Then add the following key and set the corresponding value to true:
<plist>
<dict>
<key>com.apple.developer.storekit.external-purchase-link-streaming</key>
<true/>
</dict>
</plist>For more information, see External Purchase.