On my system I am getting errors(?) like this:
bash: warning: setlocale: LC_CTYPE: cannot change locale (en_DE.UTF-8)
weemonger@awesomeLinuxSystem:~$ dpkg-reconfigure locales perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en:de:en", LC_ALL = (unset), LC_PAPER = "en_DE.UTF-8", LC_ADDRESS = "en_DE.UTF-8", LC_MONETARY = "en_DE.UTF-8", LC_NUMERIC = "en_DE.UTF-8", LC_TELEPHONE = "en_DE.UTF-8", LC_IDENTIFICATION = "en_DE.UTF-8", LC_MEASUREMENT = "en_DE.UTF-8", LC_TIME = "en_DE.UTF-8", LC_NAME = "en_DE.UTF-8", LANG = "en_DE.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C").
How do I fix my system an get rid of the locale warnings/errors?
I have to say, that I living in Germany and use the english (en) language for my system, but also I have configured my system to use the german (DE) formats/norms for Numbers, Money, Measurements, Page size, etc.
I did this using the KDE Control Module
Country/Region & Language.
I think I got rid of the warnings by myself, so I will post an answer myself, but wait some time before I accept it, as I didn't fully grok/understand it.