What
When you install a plugin, Claude Code also works out every plugin it depends on. If any plugin ID in that set does not match the required ID format, the install now fails with the reason unrecordable-plugin-id, and you see an error message about it.
Why
This stops the installer from writing plugin IDs into your settings that it could not record correctly.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The exact wording of the error message shown is not known.