no repeats in a column
I have social security numbers in a column. I cannot have a repeat of any of
these numbers. Is there a way to set it up so it alerts me if I have two of the same social security numbers in that column? |
select the column where you will enter the SSN
go to Data Validation and enter =COUNTIF(A$1:A$1000,A2)<2 this will give an error message whenever a SSN is repeated. "repeat" wrote in message ... I have social security numbers in a column. I cannot have a repeat of any of these numbers. Is there a way to set it up so it alerts me if I have two of the same social security numbers in that column? |
Hi
Try: Use Data Validation--Settings--Allow: Custom--Formula: =COUNTIF($C$1:$C1,C1)=1 "repeat" wrote: I have social security numbers in a column. I cannot have a repeat of any of these numbers. Is there a way to set it up so it alerts me if I have two of the same social security numbers in that column? |
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