I created a Client ID for my Android App in the API Console specifying the package name (com.clc.mmm.free) and the Certificate fingerprint (SHA1). Then I deleted the Client ID and the API Console project where the ID was created (it was a "test" API Console project).
Now I want to re-create the Client ID in a new API Console project but I am getting the message: This client ID is globally unique and is already in use.
However I cannot find a client ID for my package/key anywhere, I even un-deleted the initial project and checked, there is no Client ID for my package, but still getting the same error!
Without the Client ID I cannot publish my new release of the app with Google+ sign-in. Please help!
http://code.google.com/p/google-plus-platform/issues/detail?id=554
I had the same issue. I solved it reading the last post on this thread.