After the wedding ceremony ended, Father White handed Jimmy and Nia a wedding ceremony certificate. They still needed to take this certificate to the city hall to exchange for an official marriage license, which was quite a cumbersome process.
Actually, before the wedding ceremony, there's a step that involves going to city hall in advance to get a marriage permit. This permit only allows both parties to marry but is not the actual marriage certificate. Within the validity period of the permit, after the wedding ceremony, you take the wedding ceremony certificate provided by the church or another institution back to the government office for registration, and then the official marriage certificate is issued.
