Failed to register bundle identifier 🍎 iOS

Failed to register bundle identifier: The app identifier "com.x" cannot be registered to your development team because it is not available

Another developer team already owns that bundle identifier, so Xcode can’t create it for your team.

Seen on: iOS

Meaning

Bundle IDs are unique across all Apple developer accounts. Sample code and tutorials (com.example.app) are almost always taken.

Common causes

  • Bundle ID already registered by another team
  • Using a sample project’s identifier
  • Free team limits on new App IDs

⚡ Quick fix

  1. Change the bundle identifier to a unique reverse-DNS value you own
  2. Use the same prefix for extensions (com.you.app.widget)

Detailed fix by platform

Xcode

  1. # Target → General → Bundle Identifier: com.yourcompany.yourapp

How to diagnose

  1. ID — Unique to you?
  2. Extensions — Prefixed with the app ID?

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

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