For your purposes, you will receive a certificate from the population register about the data stored there about you.
From now on, you do not need an appointment for this request at the BürgerServiceCenters Mitte, Nord and Stresemannstrasse. You can do this at the Express counter. Please note the different opening hours of the express counters in the various BürgerServiceCenters.
Unfortunately this specification of service has not yet been completely translated.