Comments on: Data Validation to Avoid Duplicate Values

By: Blake Bond

Blake Bond — Mon, 13 Feb 2017 07:03:00 +0000

http://tutorialway.com/use-drawing-objects-in-excel/

By: Colin

Colin — Mon, 17 Feb 2014 04:44:31 +0000

The non-macro technique only works if the 2nd (and subsequent)entries of a specific value are entered in a row BELOW the 1st entry of that value. Try it. For example, using alpha char’s, enter a,b,c,d down the column, then go back and overwrite a or b with c or d. The duplicate entry is accepted as the DV rule returns TRUE – because it is based on the row number to determine the count, which is not really logical. A better way is to use =COUNTIF($A:$A,A1)<=1 as this works no matter where or when an additional value is entered.

By: Tayyab

Tayyab — Sun, 04 Mar 2012 17:01:25 +0000

Hi
I have requirement, to select segment name from data validation list , after selection of segment make a separate copy paste file in a specific folder, this exercise I have to in 80 segments, I made a macro but the macro didn’t change the segment name from validation list,
please help me

By: Scott

Scott — Sat, 29 Aug 2009 19:15:16 +0000

Aslam, please see the update to this tip, which includes the macro that does exactly what the article describes. Hope this helps!

By: Aslam

Aslam — Sat, 29 Aug 2009 13:14:23 +0000

Many many thanks for providing a unique data validation formula for avoiding duplicates.

In addition to this, i request you please guide us step by step that how to write macro and UDF.

thanks and kind regards