Add restrictions to vertices

[jenno1848]

Hi,

i am currently trying to implement an own experiment in COMBO. Therefore, I have some restrictions for possible solution points. I am working with the multiple_categorical scheme and I have 3 categorical variables with 20 categories each. Since the categories represent the same set with unique individuals to choose from, I have to ensure that there won't be 2 or 3 categorical variables containing the same category. All solution points must consist of unique integers. Is there a way to implement this restriction easily?

Kind regards.