SCHUFA is demanding a passport copy from EU citizens to obtain the annual unpaid data overview report. A citizen of an EU country residing in Germany is under no obligation to hold a passport. I don't understand how until now no one torn the SCHUFA credit bureau into pieces over it. https://i.imgur.com/nEZRJDv.png
In Germany as German you are obliged to have a valid identification document and as EU citizen just the same in case you are being asked for it. Wikipedia hast the links to the relevant laws https://de.wikipedia.org/wiki/Ausweispflicht#Deutschland