If your Google Play store page is locked, you may be required to provide a verification code to select your page. Verification codes were created as a way to protect against artist impersonation. Your verification code allows you to select your Google Play store page and edit your artist introduction, photos, links, genre, and other information.
To use your verification code, please go to http://play.google.com/music/publish.
If you have been issued a verification code that is not working, please contact artist support.