A parent in Sweden is facing issues with their daughter's Indian passport missing a surname, which is causing problems with Swedish documentation. They are seeking advice on how to add a surname, exploring options like using the father's name or family name, and whether there are specific legal rules in India that allow for such flexibility. The discussion suggests that in India, name changes typically require a gazette notification, but also highlights that the choice of surname is largely a matter of personal or parental preference rather than strict law, with customs playing a role. It's advised to check Swedish regulations and consult local authorities or the Indian embassy for guidance.