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I am integrating Google Calendar API for my android app. While creating the clientId for my release build, I am blocked with the error;

"Duplicate fingerprint The fingerprint you specified is already used by an Android OAuth2 client ID in this project or another project"

My debug build

Eg :- Package name is say "com.example.myapp.dev", I have enabled the "Google Calendar API", by creating the clientId with SHA1 keyprint generated by my debug keystore. Here everything works fine.

My release build

Eg :- Package name is say "com.example.myapp" When I am trying to enable the "Google Calendar API", I was stopped with the above error.

I cant find who created a clientID before, by using this package name. Also I cant change the package name, because the app is already available in playstore over years. How can I solve this issue, Can somebody please help resolving this issue. I am blocked on this now.

Additional information:

I am changing the package name using "applicationIdSuffix" from the gradle script.

Linda Lawton - DaImTo
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SivaShankar
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    Possible duplicate of [The signing fingerprint you specified is already used by another Android OAuth2 client](http://stackoverflow.com/questions/24160011/the-signing-fingerprint-you-specified-is-already-used-by-another-android-oauth2) – Linda Lawton - DaImTo May 16 '17 at 11:25
  • @DaImTo have deleted the clientId created in other project in the google API console. Still I was stuck with this issue. The issue is resolved now, by using a different google account I am able to create a clientID. Thanks for the help. – SivaShankar May 16 '17 at 13:56

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