There shall be asked the question, if the NC-username realy is a " inaccurate personal data" or if it’s just a pseudonym.
The Personal Data itself is stored as Name and can be changed…
Thank you for your input. I assure you the username contains personal data. I cant speak for anybody else but every company account “username” I ever had contained personal information. Usernames like “raketentimo” and “Gandalf73254” are mostly not ok with naming conventions.
So. I still need to change the username. If somebody has any exprience with that I appreciate any feedback.