in achievements-server/src/main/java/org/jetbrains/buildserver/achievements/impl/Novelist.java [33:38]
public boolean shouldGrantAchievement(@NotNull SUser user, @NotNull UserEvents events, @NotNull String lastEventName, Object additionalData) {
if (!lastEventName.equals(AchievementEvents.changeAdded.name())) return false;
if (!(additionalData instanceof SVcsModification)) return false;
SVcsModification mod = (SVcsModification) additionalData;
return mod.getDescription().length() > 3000;
}