For someone who was not a part of Amaharpe, it could prevent them from entering the kingdom or trading with it.
As for those who were residents of Amaharpe, it could be something as small as paying a hefty fine or as big as being exiled from the kingdom. However, dishonor marks were different for the nobles of Amaharpe. If a noble household accumulated a certain number of dishonor marks, then that family would be seen as unfit to uphold the pride of Amaharpe and stripped of their nobility!
Due to this system, the noble families in Amaharpe constantly stayed on their toes as not to bring shame to their kingdom and end up losing their status as a result. Unfortunately, there were still those like Ikaris who took this rule lightly and paid a heavy price for it.