Looking for help with a formula to automate a check box that removes duplicates for certain criteria. Today have two formulas setup. One that pull together two fields and the other is a check box column with a formula that auto checks a box or leaves the box unchecked if there are duplicates. This doesn't meet all of our needs.
=IF(COUNTIF(String$1:String1, String@row) = 1, 1, 0)
*What we would like to have is a formula that joins the 3 column headers below (SMCC Action, Distribution Center and New Distrb Sku Nbr) and checks the box for all the line items where LI is reflected under SMCC Action but only checks the box once where NIR is reflected in SMCC Action column (essentially not checking the box for duplicate line items where NIR is listed). Not sure how to put together the formula so any help constructing would be greatly appreciated. Thank you!
Column Headers
SMCC Action (NIR, LI)
Distribution Center
New Distrb Sku Nbr