Got it! When you say you're upgrading from SDK 34 to SDK 35 and you get an error mentioning [duplicate], it usually means there's some kind of conflict or duplication in your project setup.

To help you better, could you please clarify:

1. Which SDK are you upgrading? (Android SDK, React Native SDK, Expo SDK, or another platform?)
2. What exactly does the full error message say? If you can paste the exact error, that would help a lot.
3. Any relevant part of your build.gradle, package.json, or config files?
4. What tools or environment you're using? (e.g., Android Studio, Expo CLI, React Native CLI)

Common causes of "duplicate" errors when upgrading SDK versions:

1. Duplicate dependencies: Two or more libraries pulling different versions of the same dependency.
2. Manifest or resource duplicates: Android resource or manifest files being duplicated.
3. Gradle cache or build issues: Sometimes the build cache needs clearing after SDK upgrades.

Quick things to try:

1. Clean your project
2. Run in your project folder:

1. or in React Native:

1. Delete build folders
2. Delete android/app/build and android/build folders manually or via terminal.
3. Check dependencies for duplicates
4. Check build.gradle dependencies or package.json for any duplicates or conflicting versions.
5. Invalidate caches and restart IDE
6. In Android Studio: File > Invalidate Caches / Restart
7. Upgrade dependencies carefully
8. When moving SDK versions, sometimes you also need to upgrade related libraries (e.g., React Native or Expo packages).