On my seletion screen, i have about 5 select-option input fields. The thing is I want to make the 'article' (s_matnr) and the 'merchandise category' (s_matkl) fields obligatory. The way it should be is that one of them should be obligatory at a time not the 2 at the same time. And 1 of them must be filled they can't be run wide open.
So in Summary, the user must either provide an input for either the ariticle or the merchandize category, not the 2 at the same time and not neither.