Validation

hotstew44

New Member
Joined
Aug 19, 2004
Messages
21
i have a row from A1 to Q1 with data in each cell. i was wondering if i could validate this row so when the data is entered in each cell an error will occur if a duplicate entry is entered in this row.
 

Excel Facts

Which Excel functions can ignore hidden rows?
The SUBTOTAL and AGGREGATE functions ignore hidden rows. AGGREGATE can also exclude error cells and more.
got it thanks!
In Data Validation, did you use something like this?
Allow: Custom|Formula: =COUNTIF($A$1:$Q$1,A1)=1
 
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