prevent duplicates

Greeting all! I am working with a spreadsheet that tracks staffing across multiple areas. What I need is to be able to prevent duplicates in specific areas of the spreadsheet. It has to be these specific areas because some areas are supposed to allow duplicates. Here are my ranges...

I created a VBA code that will prevent users from selecting duplicate data from a drop down list in column C of my excel spreadsheet, however I want users to be able to select "Other" in multiple fields without receiving an error. Here is the code that I have written but need to show how to...

Dear Experts, I tried to solve above problem using Data Validation formula but it does not help as per my wish. Because data validation does not work if somebody copy paste the duplicate values,it works when somebody types duplicate values in next column. So if I want to enter lot of urls to a...

Hi Excel Leaders, Need help in achieving following: I got 8 columns <tbody> A B C D E F G H 1 M W 1 1 4 5 6 =concatenate(a1,b1,c1,d1,e1,f1,g1) 2 M W 1 1 4 5 6 =concatenate(a1,b1,c1,d1,e1,f1,g1) </tbody> Now I want to avoid duplicate values in Column H Please help me...

Hello. Right now on a user form, I have an If statement that when a part is listed, it checks to see if it's a duplicate. What I would like to do is if the cell color in the range is Yellow (VB colorindex is 6) then it allows for a duplicate entry, but if the cell color is not yellow, then it...