DATA VALIDATION: dropdown "x" and no more that one "X" in the range

itr674

Well-known Member
Joined
Apr 10, 2002
Messages
1,786
Office Version
  1. 2016
Platform
  1. Windows
If I have a range, C4:G4, where I want to place an "X" to indicate a size, but there can be no more that one "X" in that range, is there a way to do that with Data Validation, or will it have to be VBA? This is a sizing chart to send to members and them to mark...
 

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Please try entering the following in the data validation dialog box.

Code:
[COLOR=#000000][FONT=&quot]=COUNTIF($C$4:$G$4,"X")<=1[/FONT][/COLOR]
 
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I had already used that in Allow Custom, but I was wanting to be able to use the Allow List and Allow Custom together...
 
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My apologies, I must have misunderstood your question.
 
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Just figured out I could use a "helper" cell with =if(COUNTIF($C$4:$G$4,"X")>=1,"","X") and that way when an X was selected from the Allow List "helper" cell, it would be blank in any other cell in the range so another X could not be selected ...

Now to try andybrown115 solution...
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Last edited:
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