when "Apple Support" wiped my iMac; I do not recall ever created a "Keychain" nor being instructed to do so.
what if you've never set up any "keychain"??????????
[Re-Titled by Moderator]
Windows, Windows 6
Question marked as
Keychain stores the passwords you use with websites, apps and wi-fi networks if you enabled it. If you did not then it would have nothing, a would not be relevant your wiped Mac.
Keychain has nothing to do with recovery key in the support document you posted from. And Recovery Keys only apply to your Apple ID, not your Mac directly.
The Recovery Key referenced in the support document you posted from, must be set up and generated by you. It cannot magically have been turned on any other way. If you did turn it on, you were instructed to store the 28 character key somewhere safe when you generated it. If you no longer have access to the 28 character key, and have no access to a trusted device, you can never again log in to your Apple ID.
Your wiped Mac should not be directly affected by this. It will just prevent you from logging in to your Apple ID on it.
Perhaps if you explain what issue you are having exactly, someone here can help you resolve it.