Google is upgrading more and more businesses to the new Google business local dashboard and during that process is running into issues with old listings being duplicate.

Google is sending out emails to business owners with issues with instructions on how to repair the duplicate issue and move forward with the upgrade.

Jade Wang from Google posted in the Google Business Help forums a snippet of the email and then in detail described the issues and how to address them.

The email reads:

There are two issues where this can be triggered:

(1) Your account and another account that you don’t control became verified for the same business using the old Places dashboard.

(2) You may have verified the page multiple times using accounts you control.

In each case, Jade describes how to repair the issue so you can continue with your upgrade.

For more details see the Google Business Help thread for those details.

Forum discussion at Google Business Help.