I can for example use DATA - REMOVE DUPLICATES in column B, but what do I do if I at the very same time I'd like to keep the duplicates of column B if the data is unequal in column L - Then how do I do it?

I tried a nested loop in VBA, but too much data for it. takes forever and ever to run it. Had to use CTRL-Break on it.

So... Anyone..?? :O)