App Store Connect returns the following message when the NSExtensionPointIdentifier key in the Info.plist of a Device Activity Monitor extension contains an invalid value:
ITMS-90349: Invalid Info.plist value - The value of the NSExtensionPointIdentifier key, <value>,
in the Info.plist of ".../PlugIns/...appex" is invalid.
To resolve this issue, set NSExtensionPointIdentifier to com.apple.deviceactivity.monitor-extension. The expected Info.plist structure for a Device Activity Monitor extension is:
<plist version="1.0">
<dict>
<key>NSExtension</key>
<dict>
<key>NSExtensionPointIdentifier</key>
<string>com.apple.deviceactivity.monitor-extension</string>
<key>NSExtensionPrincipalClass</key>
<string>$(PRODUCT_MODULE_NAME).DeviceActivityMonitorExtension</string>
</dict>
</dict>
</plist>
After you apply this fix, build and archive your app, then re-upload to App Store Connect to confirm the error is resolved.