In an effort to reap benefits from the chronic bX- codes, Blogger Support now asks for the details, related to the circumstances. Just fill in the form, and enjoy the feeling that your pain is not being ignored.
This request for diagnostic details, plus the bX- Codes Glossary blog, should reduce the frustration level ever so slightly, when a bX- code is experienced. Maybe this effort is part of a increased focus on solving some of the ongoing problems, like the pervasive "Another blog ..." error, encountered periodically during custom domain setup.
In order for the form to be useful, we have to use it. As I've stated before, every report about a given problem, no matter how many times experienced, is significant. If you don't report your experience, it may not be resolved as quickly as it could be.
When you get a bX- code, take the time and add an entry to the form, with complete and precise detail about the problem. Like the False Positive Locked Blog, following procedure is the best choice, all around.