Ignore this step if your configuring and generating Google Authorization Code first time.

Go to Jira Settings > Apps > Manage Google Groups Sync

Click Configure Google

Click Revoke


Click Authorize button to generate Google Authorization Code

Choose / Confirm Google Login:

Click Allow read access to Google Groups:

Copy below one time Google Authorization Code:


Copy above Google Authorization Code

Click Update.


Click Test Connection twice to make sure authorization is valid.