An App ID with Identifier 'com.example.app.extention' is not available. Please enter a different string

Question

I have tried to add extensions to my iOS app, both a today extension and an Apple Watch app. My app has been completed however when submitting my archive I got the error bas

Answer 1

I faced the same problem when i upgraded my Xcode to 7.3 and it showed me the same error in every project. The simplest solution that i found was to just the remove the apple account from Xcode and add it again.

To remove just go to Xcode > Preferences > Select the account and click on - sign.

If in case this still doesn't work . Then perform a next step of downing your provisioning profile again and run it.

Hope this helps. All the best