Ok Guys!
i did the workaround for it but hope that someone smarter than me will figure out something easier to implmenent.
I added pivot tables as many as column number for drop downs - so in this case 3.
And with VBA i am creating key for each pivot which is concatenation of each row from pt.
And next i am using formulas something similar like here:
So pivot table ensures that i do not have any duplicates plus key ensures that i can have different configurations for lookup string.
Solution is fast because VBA is run only one time to get keys and based on those keys i have named ranges which i can use in drop downs.
Anyone has easier solution?
Best,
Jacek
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