Currently there seems to be an issue during verification process on German google places.
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This error message will come up if you try to request an verification pin.
First I was thinking it's an problem of a single user account. But more and more users are reporting about same issue.
Hope it will be fixed as soon as possible because at the moment it's not possible to create new business entries in Germany on google places.
Trent Carlyle was tweeting that he could update and verify ownership. Also someone has send a comment at Mike Blumenthal's Post that it's working now. Hope it's still working now for all users and countries longer than only a few hours or days.
Today we got a feedback from Google at german maps forum. This error seems to be fixed.