How does one create a column to accept only unique serial numbers. The
serial number will contain text if that matters.

Thanks in advance,

Hi!

Use Data Validation.

Select the range in question. Assume that range is A1:A10.

Goto DataValidation
From the Allow list select Custom
In the Formula box enter:

=COUNTIF(A$1:A$10,A1)=1

OK out.

Biff

-----Original Message-----
How does one create a column to accept only unique serial
numbers. The
serial number will contain text if that matters.

Thanks in advance,

.

Using Validation is one way. See Debra D.'s site for
instructions:

http://www.contextures.com/xlDataVal07.html#Unique

HTH
Jason
Atlanta, GA

-----Original Message-----
How does one create a column to accept only unique
serial numbers. The
serial number will contain text if that matters.

Thanks in advance,

.